Nottingham Forest fashion their first chance of the extra 30 minutes.

Brennan Johnson's cross is turned towards goal by Keinan Davis but Wes Foderingham is equal to it.

First chance of extra time goes the way of the Blades.

Iliman Ndiaye smashes a shot at goal from a tight angle that Brice Samba is equal to.

If you're just joining us then firstly, where have you been?!

Secondly, a quick recap. Brennan Johnson's early goal put the Reds 3-1 up on aggregate.

The Blades needed a huge second half and got it. Goals from Morgan Gibbs-White and John Fleck have sent us to this extra 30 minutes.

The winner of this faces Huddersfield in the play-off final on 29 May at Wembley.

Image source, Rex Features

For the third time this evening we are under way.

Who is going to be the hero?

Steve Sutton
Former Forest keeper on BBC Radio Nottingham

Forest gave United chances with lapses. For long periods of the second half, Forest were second best.

To be fair to them, they are still in this. They can still be positive.

Carl Asaba
Former Sheffield United striker on BBC Radio Sheffield

I just can't believe what I've seen.

Image source, Rex Features

James Garner's shot deflects behind for a late corner for the home side but it comes to nothing and that's the whistle.

Sheffield United have turned this around in the second half and we're going to have 30 minutes more.

Play-off football man. It doesn't disappoint does it?

Nottingham Forest defender Joe Worrall upends Rhys Norrington-Davies on the halfway line and he has his name taken in Michael Oliver's little black book.

We're into two minutes of time added on and then from the looks of it we'll be having another 30.

It's going end-to-end now.

Could there be a late winner?

None of the other three completed EFL play-off semi-finals have gone to extra time.

Forest are trying to make sure this one doesn't.

Keinan Davis sees a shot blocked from 20 yards out and then James Garner heads over from a Djed Spence cross.

Tension on both benches.

Image source, Rex Features

Kevan Sangster: As a Huddersfield fan this is exactly what we wanted. Extra time please, and we’d much rather play Sheff Utd!

Forest pressing.

Keinan Davis cuts it back for Joe Lolley and his wild strike hits a Blades defender and goes out for a corner.

Steve Cook heads over from Lolley's set piece.

Nottingham Forest have had one shot on target all game.

Brennan Johnson made it count but they're going to need more if they're to get through to Wembley tonight.

Nottingham Forest striker Keinan Davis goes on a barnstorming run down the left and Ryan Yates eventually wins a corner.

He urges the home fans to give them more and they roar back.

Corner comes to nothing but that's better from Forest. They need to wrestle back the initiative here.

Handsome Nick: As a neutral, this has been a cracking 2 legged tie. Looking like Forest may be left rueing their failure to score more when they were all over Sheffield United in the first leg. Now Heckingbottom’s side are in the ascendency. Does Cooper have any ideas left?

Forest are well and truly rocking now.

Scott McKenna sends a backpass back to Brice Samba but the ball flies past the goalkeeper and out for a corner.

The home side get the ball to relative safety but it is the away side who are on top of this again now.

Just a reminder.

Nottingham Forest have not lost a single home game when they have been in front ALL SEASON.

Right.

Housekeeping.

Sam Surridge is off for Nottingham Forest and Keinan Davis is on and Scott McKenna was booked for the Reds for fouling Iliman Ndiaye in the build up to that Blades goal.

Steve Sutton
Former Forest keeper on BBC Radio Nottingham

Forest got caught out of possession and United moved the ball quickly.

Really it's no more than Sheffield United deserve.