The yellow card is Brad Smith's last act as he is replaced by young French forward Lys Mousset.

Yeah, that's a yellow card. Brad Smith lunges in on Mesut Ozil and has to take his medicine.

Moving towards the last 10 minutes. Bournemouth are still in this game and still looking for a way to come back again. 

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It's a huge a day for 19-year-old Josh Sims. The England youth international makes his Premier League debut for Southampton after impressing in the club's Checkatrade Trophy campaign.

Boss Claude Puel makes a total of six changes from the side that started the 1-0 defeat away to Sparta Prague in the Europa League on Thursday.

Southampton: Forster, Cedric, Fonte, van Dijk, Bertrand, Hojbjerg, Romeu, Ward-Prowse, Redmond, Austin, Sims. Subs: Yoshida, Clasie, Long, Rodriguez, Reed, Taylor, McQueen.

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Just the one change for Everton on Ronald Koeman's return to St Mary's.

Gareth Barry is recalled to the midfield after serving a suspension in place of James McCarthy.

Everton: Stekelenburg, Coleman, Jagielka, Williams, Baines, Gueye, Barry, Lennon, Barkley, Bolasie, Lukaku. Subs: Robles, Deulofeu, Mirallas, Cleverley, Valencia, Funes Mori, Holgate.

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Manchester United's German midfielder Bastian Schweinsteiger is on the bench and could make his first appearance for the club in nine months.

Wayne Rooney who started and scored in the Europa League win over Feyenoord on Thursday is named as a substitute as is midfielder Henrikh Mkhitaryan, who also began the match against the Dutch side.

Midfielder Michael Carrick and attacker Anthony Martial, who were in the starting XI against Arsenal last week, make way for Jesse Lingard and Zlatan Ibrahimovic, who returns from suspension.

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West Ham make two changes with Mark Noble and James Collins replacing Winston Reid and Andre Ayew.

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Petr Cech rescues Arsenal. Simon Francis' flick-on from a corner is met by Benik Afobe but his shot is blocked on the line low down by Cech. Brilliant.

John Williams
Former Bournemouth defender on BBC Radio Solent

That's not what you want to see, Ramsey and Giroud coming on when Bournemouth are looking for a bit of respite. 

I think the Cherries could look at their bench and maybe make some changes before they start throwing the kitchen sink at them... 

Two changes for Arsenal. Off go the Ox and Theo Walcott and on come Aaron Ramsey and Olivier Giroud. Something else for Bournemouth to think about.

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Handball. Surely? Simon Francis moves to the edge of the box and chips a ball forward that clearly hits Nacho Monreal's arm. The referee must have seen that, so I can only assume he thinks it was accidental.

Immediately after, a brilliant long-range pass from Mesut Ozil puts Alex Oxlade-Chamberlain through but the Bournemouth defence rally and prevent the shot coming.

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FEMI JOHN ATOYEBI: Stupid and dangerous tackle by Sanchez

Jamie Brilley: Sanchez lucky not to see red there. Nasty "tactical foul" 

Junior Stanislas is done. After receiving some on-field treatment he gingerly walks off to be replaced by Jordon Ibe, who has plenty of tricks up his sleeve. 

Either Arsene Wenger's coats are getting bigger or the Arsenal boss is shrinking. He's more puffer now than man. His side are managing this half much better than the first. Granit Xhaka launches an effort from way, way out but it flies high and wide.

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Bournemouth scorer Callum Wilson, who has done nothing this half, departs to be replaced by former Gunner Benik Afobe. Like for like up front for the Cherries.

Southampton have handed a full first-team debut to 19-year-old winger Josh Sims. They just keep churning young talent out at St Mary's.

Alexis Sanchez's frustration boils over and he goes in to the book for a nasty rake down the calf of Harry Arter from behind.

There are more holes in the Bournemouth defence now. Alexis Sanchez breaks away down the left but his low ball in to the box is just a touch in front of Mesut Ozil, allowing Adam Federici to snaffle the ball.

Moments later, Theo Walcott's low shot is blocked by the sliding Steve Cook.

Image source, AFP

It has been a day of surprise recalls. You can add Bastian Schweinsteiger to the list. The German midfielder has been named on the Manchester United bench and could make his first club appearance since March 2016.

Wayne Rooney joins him amongst the substitutes.

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So, the second half is pretty much following the path of the first. Bournemouth responded first time. Can they do it again? Or have Arsenal learned their lesson?

John Williams
Former Bournemouth defender on BBC Radio Solent

Eventually something had to give. Theo Walcott is very difficult to defend against and to pick out. 

The Cherries will have to do what they did in the first half and come from behind. 

Image source, Reuters