Oh should be a fifth as Ilkay Gundogan crosses superbly for Raheem Sterling but he gets his header all wrong.

Into the final minute.

Riyad Mahrez drags a shot wide as he looks for his second.

Southampton make a couple more changes as Ibrahima Diallo and Will Smallbone come on for Mohamed Elyounoussi and Oriol Romeu.

All you can hear is the away fans as the game ticks towards full time. Southampton should be encouraged by their display after three defeats in a row.

A flurry of changes as we enter the closing stages with Oleksandr Zinchenko, Nathan Ake and Fernandinho on for Joao Cancelo, Rodri and Aymeric Laporte for Manchester City.

Moussa Djenepo is on for Stuart Armstrong for a stunned Southampton.

Phil McNulty
BBC Sport chief football writer at St Mary's

This is a harsh scoreline on Saints but that strike from Phil Foden rises above everything we have seen so far. It even made a sweet thudding sound as it came off his left boot.

Riyad Mahrez's goal just added insult to injury.

Manchester City fans doing the Poznan and singing about Wembley. Game very much over.

Martin Keown
Former England defender on BBC One

Joao Cancelo's pass should not be allowed, it's unbelievable, with the outside of his foot. Riyad Mahrez just thinks okay I'll just tuck this home, it's nonchalant football.

He's scored 22 goals this season and I still feel that every time I watch Mahrez there is more to come.

Martin Keown
Former England defender on BBC One

That's as emphatic a finish as you will see anywhere in world football this weekend. Absolutely dispatched!

It sits up beautifully for him and on comes that wand of a left foot. What a strike that is, this is a player right at the top of his game, he's been nurtured in that position and just thumps it - that is a wonderful finish.

Big chance!

Mohamed Elyounoussi brings a high ball under control superbly before placing the ball into the path of Che Adams right in the middle of the box, Adams shoots first time but Zack Steffen saves. Kyle Walker-Peters then puts the loose ball wide of the far post.

Southampton will be kicking themselves. They should be level again.

Perhaps credit to how much Southampton have given Manchester City a game here as Zack Steffen is booked for timewasting.

Almost from the corner as it is played low into the box to Stuart Armstrong but his first-time shot is blocked.

Tino Livramento sends an early ball in from the right, John Stones clears but the ball comes back in and Southampton win a corner.

Martin Keown
Former England defender on BBC One

Armando Broja is a really interesting player for Saints - if they can get him on the ball with his pace he could cause City some problems.

They have to keep battling.

Can Southampton come back for a second time? They had looked good before Kevin de Bruyne's goal and there's still plenty of time to find a goal.

Remember, it is extra time and penalties if all square after 90 minutes.

Phil McNulty
BBC Sport chief football writer at St. Mary's

What was Mohammed Salisu doing? Needles intervention in such a dangerous position and now so costly. Saints had Manchester City careless and a little ragged. Now they have the advantage.

Southampton fans just regrouping after that disappointment and getting behind their side again.

Double subs galore as Southampton send on Che Adams and Armando Broja for Adam Armstrong and Shane Long.

Riyad Mahrez and Phil Foden are on for Jack Grealish and Gabriel Jesus for the visitors.

Martin Keown
Former England defender on BBC One

You just can't make a challenge there in that sort of situation.

But was that ever in doubt? Kevin de Bruyne is the player they look to when they're in trouble. Goalkeeper nearly gets a hand to it but there's just too much power on it and it goes underneath him.