Arsenal 1-0 West Ham United: Welbeck decides dreary affair as Giroud and Coquelin sustain injuries

Bravo saves Mahrez's penalty! Manchester City march on to the semi-finals!

Mahrez has to score to keep Leicester's hopes alive.

Vardy hits the post! it stays 3-4 in City's favour.

Jesus now... cool, calm, collected. 3-4 City.

Nmecha now fir City, on his debut... superb. 3-3.

Iborra up now. Bravo guesses right but he just can't get a hand to it. 3-2 Leicester.

Maguire now... sends Bravo the wrong way. Bottom left with unerring accuracy.

No mistake from Toure, into the side of the net. 1-2 to City, Maguire to step up.

Gundogan levels the scores with impudence. Due to the new ABBA format, City will take again. Toure stepping up.

Fuchs makes absolutely no mistake. Fantastic penalty which gave Bravo no chance.

Right, here we go. Leicester are set to take the first penalty, but it's Fuchs, not Vardy, who steps up first.

120 minutes cannot separate Manchester City and Leicester City, so penalties will have to.

Toure takes aim and fires from 25 yard, but Hamer is equal to it. One minute of time to be added on, penalties looming.

Maguire charges from Leicester's box to his own, chased by Toure, before lofting a ball for Vardy, whose volley doesn't trouble Bravo.

Mahrez jinks away from Zinchenko and aims at goal but his drive is beaten away by Bravo.

Leicester then come again through the Algerian, who feeds Vardy. The forward tangles with Danilo, but referee Bobby Madley opts against giving a spot-kick.

Great, electric link-up play between Gray and Vardy forces a Leicester corner.

It comes to nothing and City counter with speed, but Gundogan's final ball does not find Nmecha.

A change for Leicester now - Benalouane comes on for Dragovic.

Jesus and Zinchenko try to combine down the left but the latter eventually kicks the ball out of play.

Gundogan is then outmuscled by Okazaki, who then loses out to Toure, but Nmecha can't find a City shirt in the box. Zinchenko then lets fly from all of 30 yards, his effort flying just over the bar.

Leicester get the second period of extra time under way. Maguier immediately pumps the ball long, out for a throw-in.

After a brief pep talk - literally, in City's case - the players are back out for the second period of extra-time.

Maguire concedes a foul for a late challenge on Dele-Bashiru, whose heavy touch led him into trouble.

Toure will take the free-kick... saved by Hamer. That brings the first period of extra-time to an end.

Bravo's blushes were just about spared there. The Chilean was closed down at breakneck speed by Vardy, who managed to charge down his opponent's clearance, but the deflection was kind to the maligned 'keeper.

Zinchenko wins a free-kick out of Amartey on the edge of Leicester's box.

The Gerrman takes, but Iborra emphatically heads wide for a corner.

Extra-time has begun and has started in lively fashion. Mahrez makes room for a delcious cross that is begging to be turned in, but King can't supply the finish.

The Carabao Cup action certainly isn't over, folks. Manchester City and Leicester City are set for extra time after Jamie Vardy put away a 96th minute penalty after Demarai Gray quite franky dived to win the spot-kick.

Full-time: Arsenal 1-0 West Ham United

Job done by the much-changed Gunners, who secure their place in the last four courtesy of a close-range Danny Welbeck effort. A tepid affair, but Wenger's men will care not. The Frenchman is in with a real chance of winning his first ever League Cup as Arsenal boss.

Vardy equalises in the 96th minute at the King Power! Leicester haul City back in controversial circumstances.

Meanwhile, Leicester City have won a penalty in the 96th minute. A contentious one, for sure.

Four minutes of added time at The Emirates. Nelson and Masuaku are both being lectured by the referee after the latter reacted angrily to a late challenge by the former.

Little to report as we approach stoppage time, but there seems to be another injury worry for Arsenal. Coquelin is waddling off the pitch in some discomfort with what appears to be a groin problem. He joins fellow compatriot and injury victim Giroud, who has a hamstring issue.

Arsenal also about to make a change, with Sheaf coming on for Willock.

Moyes rolls the dice, but is it too late? Arnautovic comes on for young Quina.

Ospina is the nest Arsenal player to feel the wrath of Carroll. The striker led naughtily with his arm and caught the Colombian straight in the ribs. A sore one for sure.

Arsenal probably should be 2-0 up but about three Gunners just couldn't get a shot off. Elneny finally puts paid to the move, his touch allowing West Ham to clear.

Giroud has been withdrawn, and Nelson has indeed come on in his place. Approaching the final 10 minutes, still 1-0 in both matches.

Giroud is now down in some discomfort. Young Reiss Nelson is being readied, but the Frenchman is able to walk off the pitch. Gingerly, though.

You know what you did, Andy.

Arsenal are baying for Hart to be sent off after he collided with Welbeck on the edge of his penalty area, but the Irons reserve 'keeper gets away with a yellow card.

Elneny takes the free-kick low but it's easily diverted out for a corner kick, which is caught by Hart.

Coquelin is writhing in agony thanks to a challenge from Carroll, who has only just been brought on. Way to get yourself involved, Andy.

West Ham win another dangerous free-kick as Debuchy fouls Masuaku, who is in some pain.

Cresswell lines up to strike, but his effort flashes well wide of Ospina's left post. Just over 25 minutes remaining.

Leicester have made a double change early in the second half; Vardy and Mahrez are both on. Will they exploit City's young defence?

At the Emirates Arsenal have a corner that Giroud almost converts but the Frenchman is eventually crowded out.

Arsenal win a corner through Ogbonna but West Ham clear courtesy of Hernandez.

Masuaku then wins the ball high up the pitch and looks for Ayew, but Chambers just about alleviates the pressure.

West Ham get the game underway and immediately pump the ball long towards Hernandez. Arsenal have no issue with the long punt and quickly win possession in the Irons' half, but Holding is eventually penalised for a foul on Hernandez.

Back underway at the King Power Stadium, while both Arsenal and West Ham have emerged from the tunnel ahead of the second period. Let's hope we're not in for another tepid three quarters of an hour.

In the other quarter-final tonight, Manchester City are leading 1-0 at the King Power Stadium. Bernardo Silva's strike the difference between the league leaders and Leicester, who have made a raft of changes.

The man in the middle has made the difference at half-time.

Half-time: Arsenal 1-0 West Ham United

Welbeck's close range effort is the difference between the two sides after a rather drab first half. Arsenal had more of the territory, as you would expect, but did not really trouble West Ham until Walcott's missed header was followed up by Welbeck, who made no mistake.

West Ham did not work Ospina and will need to at least have a shot if they are to keep their League Cup dream alive.

Young Willock tries to double Arsenal's advantage after being fed by Welbeck, but his effort from just outside the box fails to trouble Hart.

Coquelin lofts a ball to Debuchy, who heads the ball into the six yard box. Welbeck wins it in the air, chests the ball down and stabs past Hart to give Arsenal the lead. Arsenal had been looking a touch more dangerous in the last five minutes, and deserve the lead on the balance of play.

GOAL! Arsenal 1-0 West Ham United (Welbeck)

Walcott misses a glorious opportunity to give Arsenal the lead. Kolasinac gallops into space on the left and finds Walcott, all alone in West Ham;s box. The forward must at least trouble Hart, but no, he woefully sends the ball wide with his head.

West Ham earn a free-kick in a dangerous area as Debuchy fouls Masuaku. The free-kick is taken well but claimed by Ospina, who allows Arsenal the chance to have more meaningless possession in their opposition's half.

Kolasinac surges into dangerous territory, but his shot flashes comfortably wide.

Absolutely nothing of note to speak of so far, so here's a picture of some of the 'action'.

Hernandez is now down, writhing in absolute agony after a coming together with Holding, who doesn't look overly impressed. West Ham are rather toothless in attack but solid defensively, with Arsenal predictably flat as we pass the half-hour mark.

In the other game this evening, Manchester City have, perhaps unsurprisingly, taken the lead against Leicester. Bernardo Silva and Gundogan combine on to counter to help the former fire past Hamer. 0-1.

West Ham now enjoying some possession in Arsenal's half. It comes to nothing, though, and the Gunners eventually retrieve possession. Wenger's men seem to be targeting West Ham's left side with Debucy and Walcott, but to no avail so far.

Debuchy's searching cross finds Giroud but the Frenchman cannot bring his compatriot's deliver under his spell. Walcott then attempts to whip a ball in, but i bet he wishes he hadn't after that effort.

Quarter of an hour gone, the game is woefully short on attacking quality. Welbeck just tried to do everything on his own and won a corner out of Collins, but the Welshman cleared the resulting set-piece.

Debuchy wins Arsenal's first corner of the match.

Walcott delivers but West Ham clear easily. Arsenal then work through the second phase and win another corner courtesy of a deflection, but Holding just can't connect.

West Ham's first foray forward is disrupted initially by Chambers and eventually worked all the way back to Reid.

Arsenal then search for Welbeck, but composed play from West Ham snuff out any danger.

Arsenal look to break out at speed, with Walcott linking up Giroud, who lays the ball off to an onrushing Elneny. But any building is ended by the linesman's flag, with Giroud perceived to be the guilty party.

Debuchy sends a lopping cross into the box but Welbeck can't do anything with it. Arsenl recycle possession on the left flank and work it back to Walcott, whose shanked cross goes out of play for a goal kick.

Olivier Giroud gets things under way at The Emirates. Immediately Walcott is freed down the right hand side but his cross for Welbeck is caught by Joe Hart.

The teams are emerging out onto the hallowed turf at The Emirates Stadium. Kick-off just moments away.

Just five minutes until kick-off now. A final reminder of today's teams:

Arsenal: Ospina; Debuchy, Chambers, Holding, Kolasinac; Coquelin, Elneny, Willock; Walcott, Welbeck, Giroud.

West Ham United: Hart, Rice, Reid, Collins, Ogbonna, Cresswell, Masuaku, Obiang, Quina, Ayew, Hernandez.

Players are warming up on a brisk night in north London. Kick-off less than quarter of an hour away.

West Ham will be hoping for a repeat of their heroics at Wembley in the last round of the competition.

Just 25 minutes to go until kick-off in north London. A reminder of today's teams:

Arsenal: Ospina; Debuchy, Chambers, Holding, Kolasinac; Coquelin, Elneny, Willock; Walcott, Welbeck, Giroud.

West Ham United: Hart, Rice, Reid, Collins, Ogbonna, Cresswell, Masuaku, Obiang, Quina, Ayew, Hernandez.

The Irons will need to show their steel against an admittedly under-strength Arsenal tonight. West Ham were the first away team to come away from The Emirates with three points, so the omens are in their favour.

Who will make themselves a hero tonight?

The League Cup is the only trophy Arsene Wenger is yet to win with Arsenal. Will he go one step closer to breaking that duck tonight, or will West Ham reach the last four of the competition for the second time in five seasons?

Was there a 90-minute delay for the posting of this tweet? Probably.

Runaway leaders Manchester City are also in Carabao Cup action this evening. They face Leicester City, and line up as follows:

Manchester City: Bravo, Danilo, Mangala, Adarabioyo, Zinchenko, Yaya Toure, Diaz, Foden, Bernardo, Gundogan, G Jesus.

Subs: Ederson, Walker, Delph, Sane, Nmecha, Duhaney, Dele-Bashiru

Leicester City: Hamer, Amartey, Dragović, Maguire, Fuchs, Chilwell, King (c), Iborra, Albrighton, Okazaki, Iheanacho.

Subs: Jakupović, Simpson, Benalouane, Gray, Mahrez, Vardy, Ulloa.

Though he doesn't have an awful lot to play with at present, David Moyes has made six changes to the side that beat Stoke on the weekend. Hernandez and young Domingos Quina start, while Andy Carroll is fit enough for the substitutes' bench after a month out with back problems.

As expected, Arsene Wenger makes a whole host of changes to the side that edged out Newcastle on the weekend. Kolasinac is back, as is Walcott, and there is a start for the highly regarded Chris Willock.

SUBSTITUTES

West Ham United: Adrian, Zabaleta, Makasi, Haksabanovic, Arnautovic, Sakho, Carroll.

SUBSTITUTES

Arsenal: Macey, Sheaf, Da Silva, Reine-Adelaide, Nelson, Akpom, Nketiah.

TEAM NEWS

West Ham United's starting line-up in text form:

Hart, Rice, Reid, Collins, Ogbonna, Cresswell, Masuaku, Obiang, Quina, Ayew, Hernandez.

TEAM NEWS

Arsenal's starting line-up in text form:

Ospina; Debuchy, Chambers, Holding, Kolasinac; Coquelin, Elneny, Willock; Walcott, Welbeck, Giroud.

TEAM NEWS

Team news is imminent. Will Wenger neglect the kids and play some more recognisable faces, and how will Moyes shape up in the absence of Lanzini?

Will we see more of the same from a resurgent Arnautovic?

Theo Walcott is in line to start the Carabao Cup quarter-final against West Ham United at The Emirates Stadium on Tuesday [19 December] after recovering from a groin problem.

The 28-year-old missed the Premier League draw with the Hammers as well as the win over Newcastle United with the minor fitness issue, but is fit to return this week.

David Moyes hopes to welcome back towering forward Andy Carroll for the clash against Arsenal, who slumped to a 0-0 draw when the two sides last met. Moyes will also hand a start to goalkeeper Joe Hart, who recently lost his place in the starting line-up to Adrian.

"It will be the same sort of squad as at Stoke, we won't be a million miles away from it," Moyes said. "Andy Carroll could return. He's had a bad back but he trained today and we will make a call on him tomorrow.

"Joe Hart will definitely start tomorrow night. He's been very good around the place and he's ready to play.

"We are short on players at the moment but we would have changed one or two. Our priority is to get away from the bottom of the league but nothing would give me more pleasure than reaching a cup final."

Olivier Giroud could well start tonight, but the forward will ask Arsene Wenger to allow him to leave Arsenal in the January transfer window should the right offer come along, the striker's agent has said.

The Frenchman has started just one Premier League game this season and is understood to be unhappy with a lack of game time at the Emirates, despite starting every game in the Europa League and the Carabao Cup.

"There will be approaches," Manuello told French website footmercato.net, as quoted by ESPN.

"All those clubs looking for a striker are likely to come in for him. We have to be careful, and if there is something clear that presents itself, we'll try to convince Arsene to go back on what he said."

Some pre-match thoughts from West Ham United boss David Moyes:

"It would definitely boost the Club and everything we do, 100 per cent, if we were to go through," he said. "I've been fortunate enough to be at some big clubs and you need to win trophies.

"But at the same time, you can't go about with a 24 or 25-man squad and not give everybody a game, otherwise you won't have a 24 or 25-man squad, so you will see all the teams make changes, not because they are trying to weaken their team, but because they have to give other players the chance to show what they can do."

West Ham boss David Moyes is not able to ring the changes this evening, but he will be without one of his key players tonight.

Manuel Lanzini is set to begin a two-match suspension after he was judged to have deceived an official during West Ham's win over Stoke City on the weekend.

The charge has, unsurprisingly, sparked debate and controversy; should he have been banned?

Good evening and welcome to IB Times UK's live coverage of Arsenal vs West Ham United.

Both the Gunners and Irons seem to have their eyes firmly fixed on league matters, but Arsene Wenger may need to take the Carabao Cup seriously, as the Gunners do not seem to be blessed with opportunities for silverware this season.

West Ham boss David Moyes has seemingly turned a corner in east London if recent results are anything to go by, and while the priority for the Hammers is to ensure Premier League survival, the Scot will want to add the League Cup to his rather barren trophy cabinet, where the 2013 Community Shield still takes pride of place.

Stay with IB Times UK for the latest updates, team news and reaction from all the goings on at The Emirates Stadium.