Arsenal 2-1 Burnley: FA Cup fourth round as it happened

That is all from this blog, but stay with IBTimes UK and click here to follow live coverage West Ham's trip to Liverpool.

With Bournemouth coming from behind to win at Portsmouth, Shrewsbury's victory over Championship promotion chasers Sheffield Wednesday is the stand-out shock from those matches. Three goals in the last 11 minutes saw Peterborough claim a replay against West Brom, while Manchester City thrashed Aston Villa.

It was far from straightforward, but Arsenal's pursuit of a third straight FA Cup triumph remains alive as they book their place in round five.

Here are the rest of this afternoon's results:

Bury 1-3 Hull City

Portsmouth 1-2 AFC Bournemouth

Oxford United 0-3 Blackburn Rovers

Crystal Palace 1-0 Stoke City

Nottingham Forest 0-1 Watford

Shrewsbury Town 3-2 Sheffield Wednesday

Reading 4-0 Walsall

Aston Villa 0-4 Manchester City

Bolton Wanderers 1-2 Leeds United

West Bromwich Albion 2-2 Peterborough United

Full-time

Arsenal 2-1 Burnley

Almost late drama as Walcott looks to add a third for Arsenal but is thwarted by a well-timed intervention from Heaton.

Arsenal are not merely content to sit on this one-goal lead. Oxlade-Chamberlain surges into the penalty area and feeds Walcott, whose cross is headed away by Mee.

Elneny collects the loose ball and shoots narrowly over.

A chance for Gray to level after he controls Barton's lofted through ball with his head. Bearing down on goal, the shot comes off his shin and rolls wide.

Four minutes of added time signalled by the fourth official.

It's not pretty from Burnley, but they burrow forward and Hennings tees up Kightly but the former Wolves and Stoke winger can only fire over. A deep cross towards the back post from Barton is then claimed by Ospina.

Frustration for Oxlade-Chamberlain as he loses composure at the vital moment and sends his shot high over the crossbar. Stephen Ward then receives treatment for a painful blow before Koscielny clears with Gray lurking.

Although the score remains at 2-1 with Burnley far from beaten, Wenger opts to take off Sanchez. The Chilean only recently returned from hamstring trouble and is replaced by Theo Walcott.

Dyche's final change is Michael Kightly for Boyd.

Another Burnley substitution sees Rouwen Hennings replace Vokes. The visitors win a corner that leads to Arfield lashing over under pressure from Giroud.

Fantastic agility from Heaton as he dives across goal to push a whipped free-kick from Sanchez around the post with two hands.

Koscielny then enters the referee's notebook for a handball that prevented Gray from breaking forward.

With 20 minutes plus stoppage time remaining, the lively Iwobi is withdrawn and replaced by Tomas Rosicky, who receives loud cheers from the home faithful as he makes his first Arsenal appearance since recovering from a serious knee problem sustained on international duty for the Czech Republic in May 2015.

Mikel Arteta is also on for Coquelin, who will have been pleased to get 70 minutes under his belt after recovering from injury.

Sanchez lofts the ball forward for Gibbs, who lays it back nicely for Elneny to curl harmlessly over the crossbar.

Barton replaces Jones for Burnley.

Coquelin wins the ball with a well-timed sliding challenge before Arfield is penalised for pulling down Sanchez. Yellow card.

The Gunners live dangerously as Gray finds his way out of the corner and picks out Boyd, who beats Chambers too easily and tries to find Vokes. Koscielny is alert to clear in the six-yard box.

Arsenal apply real pressure through the industrious Oxlade-Chamberlain. After a couple of corners, Elneny unleashes a powerful drive from distance that Heaton is equal to.

Almost a moment to forget for Mee as he plays a risky pass back to Heaton who clears under pressure from Iwobi. His goalkeeper certainly won't thank him for that.

So nearly 3-1 to the hosts as Keane's attempted headed clearance from a corner flies towards the back post and Koscielny's effort is cleared off the line by Arfield. Crucial intervention from the Scottish midfielder.

Arsenal have created preciously little during the early stages of this second half but they retake the lead as a crisp break ends with Oxlade-Chamberlain pulling a cross back from the byline towards Sanchez, who thunders beyond Heaton from close range.

Goal: Arsenal 2-1 Burnley (Alexis Sanchez)

Burnley scamper forward once again as Gray wins the flick-on and Arfield sets off in quick pursuit. Under pressure from Gabriel, he shoots straight at Ospina from a narrow angle before colliding with the goalkeeper when trying to claim the rebound.

Wenger is not amused with that challenge as the Colombian international stays down.

The first chance of the second 45 falls to Dyche's side as a free-kick from David Jones is headed towards the back post by Mee but Iwobi makes a timely intervention to deny Gray.

Burnley gets us back underway for the second half. This feels like a cup tie that really could go either way, unless Arsenal can quickly reassert their dominance.

The only shock on the cards at the moment is at Fratton Park, where Portsmouth lead Premier League Bournemouth 1-0 courtesy of a goal from Gary Roberts shortly before half-time.

Kelechi Iheanacho has notched a brace for Manchester City against Aston Villa, while out-of-favour striker Saido Berahino is the man who has put West Brom in front at home to Peterborough. Leeds are comfortably ahead at Bolton thanks to Souleymane Doukara and new signing Toumani Diagouraga.

Wilfried Zaha, meanwhile, has given Crystal Palace an advantage in an all top-flight affair against Stoke.

Here are the half-time scores from the rest of the 15.00 GMT FA Cup matches:

Bury 0-1 Hull City

Portsmouth 1-0 AFC Bournemouth

Oxford United 0-2 Blackburn Rovers

Crystal Palace 1-0 Stoke City

Nottingham Forest 0-0 Watford

Shrewsbury Town 0-1 Sheffield Wednesday

Reading 2-0 Walsall

Aston Villa 0-2 Manchester City

Bolton Wanderers 0-2 Leeds United

West Bromwich Albion 1-0 Peterborough United

After largely dominating the opening exchanges, Arsenal were very lackluster indeed for the final 15 minutes there and that allowed Burnley back into the game. Sanchez and Iwobi have been a constant source of danger for the hosts, but Gray and Vokes pose their own significant threat for Burnley.

Half-time

Arsenal 1-1 Burnley

A vital header from Keane in an awkward position. That could so easily have been an own goal by the former Manchester United centre-back.

Brilliant close control from Sanchez as he somehow evades the attention of multiple Burnley players before winning a corner with a looped pass towards the back post. His blocked shot then forces another, but Heaton punches clear.

There has been a rather subdued atmosphere around the Emirates so far this afternoon. Oxlade-Chamberlain receives possession from Elneny and tries to test Heaton with a low drive that is comfortably saved.

Burnley, who have won their last three league matches, are certainly not lacking in confidence now and Gray looks to test Ospina before being flagged for offside. Five minutes of the first half remaining and this tie is finely balanced.

End-to-end stuff now as Iwobi glides into the Burnley penalty area. His cross takes a big deflection off Ben Mee and Oxlade-Chamberlain is already falling as he slices a tricky effort wide at the back post.

Despite being comfortably second best over the last few minutes, Burnley equalise. After pinball in the Arsenal box, the ball is played out to Darikwa on the right and he swings in an enticing cross that is headed home powerfully by Vokes.

Game on.

Goal: Arsenal 1-1 Burnley (Sam Vokes)

Burnley make a rare trip forward on the half-hour mark as Arfield carries the ball down the left and wins a corner off Gabriel.

Arsenal probe calmly once again but Coquelin's through ball towards Sanchez is vitally intercepted by Michael Keane.

Burnley, who looked to get dangerman Gray involved frequently in the opening exchanges, are offering no attacking threat whatsoever at the moment.

Total domination from the hosts.

Patient build-up play from Arsenal in front of a wall of yellow shirts and they are rewarded for their persistence as Iwobi makes inroads and feeds Sanchez, who then flicks through Scott Arfield's legs to find Chambers.

The 21-year-old, who scored against Burnley in the Premier League last season, shows great technique by flicking a wonderful effort beyond Heaton and into the top corner.

Fine finish.

Goal: Arsenal 1-0 Burnley (Calum Chambers)

Arsenal pour forward as Oxlade-Chamberlain tries to pick out Olivier Giroud with a corner and Chambers lashes an effort from distance that is well-struck but blocked. Burnley then clear following a goalmouth scramble.

Nearly humiliating for Laurent Koscielny as he totally misjudges a bouncing ball and Gray proceeds to run through on goal before seeing his shot well saved by an alert Ospina.

The goalkeeper reacts quickly again to snuff out any danger as Sam Vokes looks to capitalise on a through ball.

Elneny involved quite frequently in the early stages of his Gunners debut as he fires tamely at Heaton from 25 yards.

Gabriel is perhaps a touch fortunate not to let the highly-rated Gray in on goal before Arsenal go straight back down the other end and win a second corner.

This time Sanchez collects possession and cuts inside George Boyd before pulling a low left-foot shot just wide of Tom Heaton's right-hand post.

A quick start from both sides as Andre Gray and Oxlade-Chamberlain both shoot off target. Elneny then wins a corner for Arsenal but Burnley can clear.

Referee Roger East gets us underway. Arsenal attacking from right to left in this first half.

Kick-off from the Emirates Stadium is now just moments away. Here is a quick reminder of the rest of today's 15.00 GMT FA Cup fourth-round matches:

Bury v Hull City

Portsmouth v AFC Bournemouth

Oxford United v Blackburn Rovers

Crystal Palace v Stoke City

Nottingham Forest v Watford

Shrewsbury Town v Sheffield Wednesday

Reading vs Walsall

Aston Villa v Manchester City

Bolton Wanderers v Leeds United

West Bromwich Albion v Peterborough United

The full-time whistle has now blown at Colchester, where goals from Nacer Chadli, Eric Dier and Tom Carroll have secured a comfortable 4-1 victory for the Premier League side.

As for Burnley, Sean Dyche picks Tendayi Darikwa ahead of Matt Lowton at right-back. In their only other change from a thumping 4-1 win over promotion rivals Derby on Monday night, Fredrik Ulvestad starts ahead of Joey Barton, who is included among the visiting substitutes.

Arsene Wenger hands a debut to January signing Mohamed Elneny. The Egyptian international, signed from FC Basel in a £5m deal last week, is partnered in midfield by Francis Coquelin, who makes his first appearance since suffering a bad knee injury at West Brom in November. Aaron Ramsey and Mathieu Flamini make way.

David Ospina replaces Petr Cech in goal, while Gabriel deputises for the suspended Per Mertesacker. Calum Chambers and Kieran Gibbs are in for Hector Bellerin and Nacho Monreal at full-back and young Alex Iwobi replaces Joel Campbell. Alex Oxlade-Chamberlain gets the nod ahead of Theo Walcott and Alexis Sanchez makes a welcome return to the starting XI as Mesut Ozil is rested.

Burnley: Heaton, Darikwa, Keane, Mee, Ward, Boyd, Jones, Ulvestad, Arfield, Vokes, Gray

Substitutes: Robinson, Duff, Kightly, Taylor, Lowton, Barton, Hennings

Arsenal: Ospina, Chambers, Gabriel, Koscielny, Gibbs, Coquelin, Elneny, Iwobi, Oxlade-Chamberlain, Alexis, Giroud

Substitutes: Cech, Monreal, Bellerin, Arteta, Rosicky, Walcott, Campbell

All the latest team news before Arsenal vs Burnley is on the way very shortly...

In the day's early match, League One relegation favourites Colchester currently trail Tottenham 1-0 at half-time following an excellent strike from Nacer Chadli that came after the hosts had lost both of their starting centre-backs to injury.

You can follow live coverage of that match here. To relive Manchester United's 3-1 win over Derby last night, click the link below.

https://www.ibtimes.co.uk/derby-county-vs-manchester-united-fa-cup-fourth-round-live-1540905

Hello and welcome to IBTimes UK's second live FA Cup fourth-round coverage of this busy Saturday as Championship promotion hopefuls Burnley travel to face holders Arsenal at the Emirates Stadium.

We will have team news and frequent updates from north London very shortly in addition to half-time and full-time scores from the rest of this afternoon's 15.00 GMT kick-offs. Stay tuned...