Swansea boost survival hopes by humiliating Arsenal after rare Petr Cech mistake

Well that is all we have time for from the Liberty Stadium. Arsenal humiliated by Swansea, while in east London West Ham and Crystal Palace have a valuable point in their respective bids to beat the drop.

Join us tomorrow for live coverage of the final day of trading in the January transfer window, while we also have coverage of seven games from the top flight including Tottenham vs Manchester United.

But until next time, it's goodbye.

Full time: West Ham 1-1 Crystal Palace

Full time: Swansea 3-1 Arsenal

Two wins in a row for the Swans, who are out of the bottom three for the first time since October. What a success for Carlos Carvalhal who is making this Premier League malarkey look easy.

Arsenal however look doomed in the race for the Champions League and are destined to fall eight points behind fourth place. Pierre-Emerick Aubameyang might be on his way but there are few other positives to emerge from this game, they were woeful.

Olivier Giroud played 14 minutes before he is expected to join Chelsea, such was the Gunners' desperation.

Three added minutes at the Liberty Stadium. Arsenal are sunk here.

Just to put this display into some kind of context.

Olivier Giroud on for Arsenal but he can't turn their fortunes around.

GOAL! Swansea 3-1 Arsenal (Sam Clucas)

What a mess for Arsenal but jubilation for Swansea.

Jordan Ayew has been a threat all night and he scampers past Mustafi and though the German nips in Clucas reacts first and slams past Cech. Game over.

Swansea not under a great deal of pressure but Arsenal are pushing them back onto the edge of their own box. They hung on against Liverpool; can they repeat the trick tonight?

Arsenal have been woeful since the goal for Ayew and have barely test Lukasz Fabianski in the Swansea goal. Eleven minutes to go and you have to saw the home side look comfortable.

Petr Cech laments the mistake which gifted Swansea the advantage.

Olivier Giroud on for the final 15 minutes in south Wales. Desperate times and all that.

Not sure I can believe he is on just hours ahead of him joining Chelsea.

Jordan Ayew celebrates putting Swansea ahead.

This sums up the madness.

Olivier Giroud coming on for Arsenal. Still 18 minutes to go, but this is a hell of a gamble.

Swansea should be three up. Nathan Dyer is played in by Mustafi's dreadful header, but he drags wide.

Henrikj Mkhitaryan on for his Arsenal debut - but it is not going to plan.

Henrikh Mkhitaryan was on for just one minute before Arsenal went behind. Not the ideal start for the Armenian.

Will Arsene Wenger dare risk Olivier Giroud now? The Gunners have been short of ideas and they could look to the Frenchman to turn things around.

But do the north Londoners risk him, when an injury could lead to the Aubameyang deal collapse?

GOAL! Swansea 2-1 Arsenal (Jordan Ayew)

Remember the day: Petr Cech with a howler.

Mustafi plays the ball back from a throw and as Swansea put pressure on Cech he miss-kicks straight to Ayew who finds the corner with ease.

Now Kyle Naughton heads behind from another Arsenal cross. The pressure is being ratcheted up here.

Now here comes Mkhitaryan, replacing Elneny for the final 30 minutes.

Henrikh Mkhitaryan ready to come on to make his Arsenal debut, as Mesut Ozil tests Lukasz Fabianski.

First yellow card of the evening for Mohamed Elneny, who handles as Fer tries to release Ayew on the break.

Hector Bellerin's cross turned behind by Van der Hoorn as Swansea start the second half like they begun the first, surrendering plenty of possession and allowing Arsenal to dictate - though it would be fair to say they are providing a bit more thrust this time around.

Arsenal completely dominating possession in the second half until Lacazette loses the ball in a tackle with Alfie Mawson. The Frenchman has been hopelessly poor in this game.

Players back out for the second half at the Liberty Stadium. No changes as yet. Second period under way.

Half time: West Ham 1-1 Crystal Palace

Half time: Swansea 1-1 Arsenal

Decent half of football, considering the conditions.

Arsenal took the lead against the run of play when Ozil's lofted pass allow Monreal to poke home.

But Swansea levelled a minute later through the impressive Sam Clucas, and they could have had more had Jordan Ayew and Leroy Fer not been as wasteful.

GOAL! West Ham 1-1 Crystal Palace (Mark Noble)

James Tomkins brings down Javier Hernandez, allowing Mark Noble to step up and send Wayne Hennessey the wrong way.

PENALTY TO WEST HAM

Sam Clucas celebrates equalising for Swansea.

Arsenal celebrate going ahead at the Liberty Stadium.

Leroy Fer rampages through the Arsenal defence but when he should play in Ayew down the right he shoots instead and his effort is weak and Cech makes a simple save.

Swansea should really be ahead here, but instead they're heading into the break level it seems.

GOAL! Swansea 1-1 Arsenal (Sam Clucas)

I was just about to say Swansea were unfortunate to be behind but they are no longer. Alfie Mawson collects possession and slides the ball through to Sam Clucas who runs inside Granit Xhake and finishes past Cech.

That is Monreal's second goal in three games [as well as his contribution to Arsenal's equaliser against Chelsea last week] having also scored against Palace in that 4-1 win.

GOAL! Swansea 0-1 Arsenal (Nacho Monreal)

Very tidy goal for the visitors after they have been outplayed in the opening half an hour. Mesut Ozil is the architect with a delicious ball over the top and Monreal arrives on cue and stabs home.

Here is the end of that Elneny tackle which almost led to Swansea taking the lead. Really good tackle from the Egyptian.

First effort of any significance for Arsenal and it comes for Alex Iwobi, who forces Fabianski into a low save at his near post.

You can't keep Alfie Mawson out of this game and he almost opens the scoring again with a shot from 20 yards which beats Cech but also the outside of left-hand post.

GOAL! West Ham United 0-1 Crystal Palace (Christian Benteke)

It might just be his second goal of the season but Christian Benteke grabs a priceless one for Palace with a header after Andros Townsend's cross.

BREAKING TRANSFER NEWS

Chelsea complete the signing of Emerson Palmeri from Roma.

Ki shoots wide from 30 yards as Swansea continue to impress here. Arsenal really not got going.

All eyes on Lee Mason as Mohamed Elneny tackles Sam Clucas as he goes through on goal. Swansea want a penalty but replays show the Egyptian got a firm right boot on the ball and found his goalkeeper. Brilliant challenge, and a great decision from the official.

But we still need VAR, of course.

Nathan Dyer proving to be a threat in the early exchanges.

So close! How did Swansea not take the lead there?

Alfie Mawson looks destined to score at the back post after a flowing Swansea move, but Aaron Ramsey gets back and makes a fine goal-saving challenge.

Swansea have sat in here and are very happy to sit back and allow Arsenal to dominate in deep areas.

Jordan Ayew gets a rare glimpse of the ball and his shot from the edge of the box deflects wickedly off Mustafi and balloons wide of Cech's goal.

It is really horrible in south Wales, with both sides suffering early on and failing to gain any real control amid the inclement conditions.

Players out at the Liberty Stadium. Should be a decent game this between two sides who badly need a win. Updates on the way and from the London Stadium where West Ham host Palace.

So how about some predictions to tie us over until kick-off?

Swansea 2-0 Arsenal

West Ham 1-1 Crystal Palace

Remind me of these later, please.

Big chance for Arsenal to address this stat.

Can West Ham serve up a treat for their supporters tonight as they host Crystal Palace. It is a key game at the bottom for both sides.

Arsenal have an early chance tonight to cut the gap to the top four. Victory over the Swans will see them go level on point with Tottenham in fifth, who face Manchester United tomorrow before travelling to Anfield this weekend.

The next few days could be a real chance for Wenger's side, who themselves host Everton in the Saturday teatime kick-off.

The sidelined-Wilshere wishes goodluck to his teammates.

So what of Arsenal's prospects tonight?

Life without Alexis Sanchez continues and having struggled in the league of late tonight is the ideal opportunity to get back to winning ways.

The problem is that Arsenal have tended to allow evenings such as these get the better of them and without Jack Wilshere they will lack of a degree of control in midfield, something they could need when the going gets tough.

Mesut Ozil is in the team tonight however and surely it will be down to him to make the Gunners tick.

Swansea have arrived at the Liberty Stadium.

If Huddersfield vs Liverpool is more you thing tonight, you can follow the sole 8pm kick-off via our other live blog running simultaneously tonight. Go here for all the gloriousness from the John Smith's Stadium.

Arsene Wenger arrives at the Liberty Stadium. Expect him to be asked about Arsenal's transfer dealings tonight.

Here is the team news from the London Stadium, where there is a debut for a new January acquisition.

Confirmation of Jack Wilshere's absence through illness.

Swansea unchanged from the win over Liverpool. Jordan Ayew leads the attack. Match-winner from that success over the Reds Alfie Mawson is in defence.

And now for Swansea.

Two changes for Arsenal from the Carabao Cup win over Chelsea. Petr Cech returns in goal while Aaron Ramsey replaces Jack Wilshere, who is ill.

Here comes the Arsenal team...

BREAKING TEAM NEWS

Henrikh Mkhitaryan on the bench for Arsenal

Big night for Swansea, amid all the transfer kerfuffle, and they can jump out of the bottom three with a win tonight. They stopped 'Formula One' car Liverpool last week, so why not Arsenal tonight? The Liberty Stadium will not be a nice place to play, with plenty of wind and rain around.

So will Olivier Giroud be involved tonight? Can Arsenal afford to field him when the Aubamayang deal hinges on the deal? if he got injured it would be a major blow to Chelsea, and it might prevent Batshuayi leaving on loan to Dortmund.

Add to this that Arsenal are short of strikes themselves, Danny Welbeck is injured, leaving Alexandre Lacazette as the only remaining option.

Brollies out in force in south Wales. But will the home fans be singing in the rain by full-time tonight?

Confirmation that Giroud has travelled with the Arsenal squad. But will he play?

So let's turn out attention to the main game tonight, as Arsenal go to Swansea. How might both sides line up?

Renato Sanches will miss tonight's game for the hosts with a hamstring injury, while Federico Fernandez is out due to a nose injury.

Olivier Giroud has travelled with Arsenal but his involvement is uncertain, as he is also nursing a hamstring injury. Henrik Mkhitaryan could make his debut.

Before we get to the team news, we promised you an update on the developing transfer stories regarding Arsenal.

Pierre-Emerick Aubameyang is in London finalising his move from Borussia Dortmund after a fee just over £55m was agreed between the two clubs. The medical is expected to be conducted tomorrow, after which the move should go through.

Olivier Giroud meanwhile appears to be on his way to Chelsea. A fee of £18m has been agreed between Arsenal and Chelsea for the Frenchman to move to west London, a transfer which should allow Michy Batshuayi to join Dortmund on loan.

You may not be able to take your eyes of the transfer window at the moment, but we have some actual football to attend to this evening, with one of the main protagonists of the market Arsenal involved tonight.

The Gunners are close to bringing in Pierre-Emerick Aubameyang from Borussia Dortmund, while Olivier Giroud could be heading to Chelsea as a result. We'll have the latest on both deals coming up.

Swansea welcome Arsene Wenger's men to south Wales tonight as they bid to reel off back-to-back Premier League wins for the first time since May. Carlos Carvalhal's men beat Liverpool last time out and could jump out of the bottom three for the first time since October if they can repeat that result.

Elsewhere, we have coverage of two sides looking to pull away from the battle for the drop. West Ham and Crystal Palace have improved vastly since changing managers and a win tonight would propel them both into the top half.

All the team news and build-up ahead of the 7:45pm GMT kick-offs on the way.