Another good chance for City!

Kelechi Iheanacho takes the ball under control in the box and sets up Patson Daka but he gets under his shot and fires over.

I can't see this ending 3-1.

Martin Keown
Former England defender on BBC One

Direct play by Leicester. Maddison has got that quality but it was always going away from goal.

Close!

Leicester hit Forest on the break and Patson Daka sets up James Maddison for a low shot that goes just past the far post.

Leicester have to go for it and Forest are certainly not sitting on their lead. It's making for a superb tie.

Jonathan Woodgate
Former England defender on BBC Radio 5 Live

On the incident which saw a supporter involved in an altercation with three Nottingham Forest players after the second goal:

There were definitely punches thrown and that is disgusting on the football field. That just should not be happening, it is disgusting.

James Maddison's free-kick is dire, taken low and straight to a Forest player to clear.

Scott McKenna is the first man there to head away the City corner.

Leicester remain a threat, though, as Caglar Soyuncu is bundled over wide right.

Now Leicester have a corner. Please let this just be end-to-end for the next 40 minutes.

City do just about deal with it. It needs a couple of headers and then a punch from Danny Ward to finally get the ball away.

Forest come charging out again. Brennan Johnson is found by Philip Zinckernagel and his shot deflects wide.

Another corner for City to deal with.

Martin Keown
Former England defender on BBC One

It will have been a very important team talk by Brendan Rodgers - and Steve Cooper too. Nottingham Forest slowed up a little bit but they have got to keep going. Leicester need to own the situation. They are heading out unless they wake up quickly.

Image source, Getty Images

I didn't notice Harvey Barnes struggling with an injury in that first half. He looked to be a threat to Forest so it's a bit surprising to see him taken off if he is fit.

Leicester have made a change for the second-half. Patson Daka is on for Harvey Barnes.

Hold on to your seats, this is going to be fun!

Michael Emons
BBC Sport at The City Ground

A bit of Neil Diamond's Sweet Caroline gets an airing at half-time.

"Good times never felt so good," says the song. Being 3-1 up against your rivals from a higher division - it's certainly good times for the home fans at the moment.

Brendan Rodgers is in no mood to sing along.

There are some pictures of a fan in an altercation with the Forest players after getting onto the pitch after the second goal. Doesn't look good, there will be repercussions there.

Chris Mitchell: What an outstanding half of FA Cup football. A little bit of everything. Hugely impressed with Forest. Cooper is working wonders there.

Former Nottingham Forest and Leicester defender Wes Morgan on BBC One: "When you concede a lot of goals throughout the season from set-pieces like Leicester have, you can over-analyse what you are doing. Sometimes you try too hard and it can have a reverse impact.

"The momentum is definitely with Forest. You need someone out there to calm things down if you are Leicester. The next goal is going to be crucial."

Here is the Leicester life-line - the reason this tie still has something in it...

Alan Shearer
Former England striker on BBC One

It's really good to see a top performance from Forest. They deserve their lead. It could have been one or two more. Brendan will be getting right into his players at hialf-time.