Andy Robertson, who took over the Liverpool captaincy when he came on, takes a corner and Curtis Jones hits a bouncing ball over the bar.

Michael Bridges
Former Sunderland and Leeds striker on Sky Sports+

From a fan's perspective, they're delighted with what they've seen, scored five goals, they're through to the next round, they've seen new players that can come in and do a job, they've seen the senior players turn up, the coaching staff have got it spot on.

All in all for Arsenal, there's ticks across the board. They're into the next round in comfortable fashion.

Curtis Jones just can't turn a ball in at the back post as Liverpool miss a chance to wrap this up.

Michail Antonio beats Conor Bradley to get into the box but the ball just gets away from him and the Liverpool keeper gathers it.

Six minutes left but it's a big ask for 10-man West Ham. Liverpool's Mohamed Salah tracks back well to stop an attack.

Jamie Carragher
Former Liverpool defender on Sky Sports

Summerville has had moments in the game where he's looked really sharp, really good touches.

Just when you're on that side and you're on the left foot, trying to put it in that far corner, it's very difficult, it's always going to be curling away from the goal.

Arsenal cruise into the fourth round of the Carabao Cup. League One Bolton are out.

Michael Brown
Former Manchester City and Tottenham midfielder on BBC Radio 5 Live

That's an incredible shot, Mac Allister just lines it up, right footed, right across the keeper.

Dives to the right hand side, just gets a touch off the post, sensational strike.

Liverpool have now got a little bit of room and you can see why they're taking that sort of opportunity on.

Liverpool send on Andy Robertson and Tyler Morton for Kostas Tsimikas and Wataru Endo.

Almost a lifeline for West Ham as Michail Antonio sends away Crysencio Summerville down the left but his shot goes just wide.

Liverpool close to a fourth.

Alexis Mac Allister smacks in a shot from 25 yards which a diving Lukasz Fabianski tips onto the post.

The rebound drops to Cody Gakpo who can't make the most of it and the West Ham keeper saves his effort.

Four minutes added on.

Jamie Carragher
Former Liverpool defender on Sky Sports

On Alvarez red card...

West Ham were so close to getting a goal and they probably deserve a goal in the second half.

But what a stupid decision when you're on a yellow card. There's two or three players running after Mo Salah, it's not like he's all alone.

It certainly wasn't last ditch. Ridiculous decision for me.

He'll be missing now at the weekend.

West Ham send on Andy Irving and Mohammed Kudus. Jarrod Bowen and Carlos Soler are replaced.

Bowen hands the armband to Aaron Cresswell.

Michael Brown
Former Manchester City and Tottenham midfielder on BBC Radio 5 Live

On Salah's goal...

It's what he does. He doesn't need too many opportunities.

Bradley does very very well down the right hand side, fizzes it across.

It ricochets off the goalkeeper, very very unfortunate. It comes quickly to Salah but I don't even know, the audacity how he strikes it so quickly, under his body, into the roof of the net.

He deserves it after that follow up.

Edson Alvarez is sent off.

Mohamed Salah runs down the right wing and plays the ball forward. After he has released the ball, Alvarez catches him with a sliding tackle.

That's a second yellow which means red.

No, Conor they can't.

Conor McNamara
Commentator on BBC Radio 5 Live

Paqueta and Antonio have given West Ham a bit more grit.

Can they make it count?

Jarrod Bowen can't believe he hasn't got at least a corner from a duel with Jarell Quansah. West Ham fans wanted a penalty. It's a goal-kick.