Tony Pulis
Former Stoke manager on BBC Radio 5 Live

Southampton's two wide players will tuck right inside the pitch, leaving the space for both full-backs to push on.

City will have to watch that they don't get outnumbered in midfield and that those balls over the top don't allow Southampton to get in.

Thirty seconds in and Tino Livramento is caught late by Raheem Sterling. Livramento looks in some discomfort and that will make some of the Saints fans feel uneasy. He's a crucial player for the hosts.

Who is joining Chelsea and Crystal Palace in the last four?

This FA Cup quarter-final is under way.

The players squint as they make their way out of the dark tunnel and out into the bright sunshine drenching the St Mary's pitch.

A beautiful day for what will hopefully be a beautiful game.

Alan Shearer
Former England striker on BBC One

Slow start. Certainly didn't see the best of him but in the last four or five weeks I feel we are starting to see more of the Jack Grealish we saw at Aston Villa.

He is starting to forget they have paid £100m for him. I think it has taken him time to believe he belongs in that Manchester City squad with all the superstars and the expectation there.

Manchester City

Manchester City boss Pep Guardiola speaking to BBC Sport: "Traditional competition and we want to reach the semi-final, as always we try to do that."

On what changes will bring: "The quality they have, they know who they are, football is not copy and paste. Every player has their own quality and that's so important against teams like Southampton."

What to expect from Southampton: "Quite similar to other times we have played them - organised, aggressive, good in set pieces and runs in behind, well structured. They defend the space of the ball not the man, tough opponent and always have been when we've played them."

Mark Lawrenson
BBC football expert

Southampton have given Manchester City a good game twice already this season - drawing home and away in the league - but Saints have hit the buffers a little bit recently.

Three successive defeats, to Aston Villa, Newcastle and Watford, mean they will not come into this game with the same confidence they had earlier in the year.

City have got plenty to think about too, although I don't think their draw at Crystal Palace on Monday was a terrible result, it's really only made to look bad because Liverpool keep on winning.

Still, I was a bit surprised Pep Guardiola didn't make any attacking substitutions to try and change that game as it went on - instead, Raheem Sterling and Gabriel Jesus were left on the bench.

When you look at how Klopp has been using his bench to make an impact on tight matches, and give the opposition something different to think about, it seemed an odd decision by Pep.

Prediction: 0-2

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

Perfect conditions on the south coast. Glorious sunshine and an expectant crowd at St. Mary's for Southampton against Manchester City in the FA Cup quarter-final.

And a loud rendition of "When The Saints Go Marching In" from a brass bans outside the stadium before kick-off to get Southampton fans in the mood.

Southampton

Southampton boss Ralph Hasenhuttl, speaking to BBC Sport: "It is a good chance for the club to win something big and to win something big you have to beat big teams. A good challenge for us.

"Pep will find solutions and we will have to find answers for the solutions he has found. This is what football is about.

"We can play better than the last three games. We are positive we can do it."

Southampton have only lost three of their past 18 FA Cup matches, two of which have come at the semi-final stage at Wembley.

They are also unbeaten in their last eight home games in the competition.

This is Manchester City's fifth FA Cup quarter-final in six seasons under Pep Guardiola.

No team has scored more FA Cup goals than Manchester City this season.

City have only failed to score in two of their past 19 FA Cup games.

BBC One

Cheers Em! Build up has just got under way on BBC One and online. Tune in!

Two more FA Cup quarter-finals to come.

Southampton take on Manchester City next at 15:00 GMT. Gary Rose is taking over to guide you through that one.

All yours, Gaz!

Crystal Palace

Crystal Palace forward Wilfried Zaha speaking to ITV: "Amazing - it's crazy that this is the first year we've played together you can see the progress already. There's more to come from this side."

On making the FA Cup semi-finals: "It shows the direction the club is going - the club is heading in a good direction.

"Fantastic feeling going to Wembley - we've achieved a lot this season and we can't wait."

Goalscorer Marc Guehi: "Really enjoying it - it's fantastic. I've settled in really well, credit to everyone at Palace for making me feel welcome. I just really hope we can continue this form.

"It was a nervy start from myself but we responded well to make sure we didn't concede a goal in that top period and we had a good performance after that."

Chelsea

Crystal Palace

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Crystal Palace

England international Marc Guehi on his form at the moment: "I'm really enjoying it! It's fantastic. I just really hope we can continue this form".

Image source, Getty Images

Karen Carney
Former Chelsea midfielder on BBC Radio 5 Live

Everton were front-footed in the first 15 minutes, they pressed and then they just fell apart. At half-time, being 2-0 down, the next goal is the most important one and all their heads were down and nothing galvanised them.

Throughout the game there were massive holes and Frank Lampard is trying to plug gaps and chop and change and they weren't cohesive. You can see that they don't believe, there's no confidence in this side at all. It is worrying.

All credit to Crystal Palace, a brilliant performance and it could've been a lot more than four.

BBC One

Crystal Palace fans, you can watch the semi-final draw on BBC One at about 17:30 GMT.

Two goals either side of the break for Palace.

An impressive performances. Cruised to the semi-finals.

Image source, Getty Images

Image source, Getty Images

Image source, Getty Images

Image source, Getty Images

Karen Carney
Former Chelsea midfielder on BBC Radio 5 Live

Unbelievable performance, great defensive display with a clean sheet and Jack Butland had very little to do. And the front four were magnificent, completely opened Everton up. A brilliant performance and it was just effortless.

The first 20 minutes they had a bit of an issue but they solved it and then never looked back.

A first semi-final in the FA Cup for Crystal Palace for six years.

The fans are loving it.