It's not hyperbole to say this is one of City's worst performances under Pep Guardiola.

Clinton Morrison
Former Republic of Ireland striker on BBC Radio 5 Live sports extra

This has been a proper cup tie. Wolves were the better team in the second half. Forest really struggled. Now it is about confidence and who wants to take a penalty.

City's second foul throw-in of the game! This time it's Joao Cancelo. Into the final five minutes.

What a game Lyanco is having at the back for Southampton. He clears an Ilkay Gundogan cross that Erling Haaland couldn't meet.

There's the whistle for full time, so we go to penalties!

Interesting time to make a debut. Southampton bring on new Croatian signing Mislav Orsic for Adam Armstrong.

You'd have to go back to 2013 for the last time City went two years or more without winning the League Cup.

Southampton are 10 minutes away from the Carabao Cup semi-finals.

Simon Stone
BBC Sport at the City Ground

Wolves tempers are fraying as referee Graham Scott books Julen Lopetegui, who, along with most of his players, is furious Matheus Nunes didn't get a penalty.

Nunes lost his boot in a collision and Ruben Neves cites that as evidence of a foul.

Wolves were equally unhappy at the decisions that went against them at Liverpool on Saturday.

Phil Foden swings the free-kick in and Lyanco heads away.

We're into the first of six minutes added on. If no-one can find a winner then it is to penalties.

This has been a very entertaining cup tie.

Chris Sutton
Former England striker on BBC Radio 5 Live

It is brilliant play from Manchester City, a flick from Phil Foden plays in Ilkay Gundogan.

He rolls it across the box with his left foot and Julian Alvarez stretching, is just not able to get enough on it.

Southampton's Ibrahima Diallo is booked for hauling down Phil Foden about 30 yards out. Just too far out to shoot.

Gavin Bazunu finally has a save to make. Julian Alvarez slides in to meet Ilaky Gundogan's ball across the six-yard box. It hits a defender too maybe before Bazunu smothers it on the line.

Clinton Morrison
Former Republic of Ireland striker on BBC Radio 5 Live sports extra

He stood on the back of his boot. It should have been a penalty but saying that I would have been angry if it was given against me.

Che Adams has the ball in the back of the net but it's disallowed. The Southampton sub is offside as he pops the ball in from close range following James Ward-Prowse's deflected shot.

Oh is Matheus Nunes fouled inside the box? The referee says no but there may have been contact because his shoe has come off after a clash with Emmanuel Dennis.

Ruben Neves runs over to pick the boot up and show it to the referee. Frustrations are boiling over now, Wolves players are not happy with that.

Huge cheers as Gavin Bazunu races out of his box to clear the ball. He hasn't had to make a save yet but he's been very good.

Wolves have stepped things up as they chase the winner before full time. Nottingham Forest, having looked the most likely to win it a few moments ago, are now hanging on.