The Blades can't afford to drop any points in their remaining games if they want to finish in the play-offs.

This will be a tough game for United because Preston are a hard side to break down, but the Blades have one of the best home records in the division so they will be relying on that advantage.

Recent results have been disappointing because Millwall equalised straight after United scored to secure a draw while Birmingham came from behind to beat them.

That's why they currently find themselves adrift of the play-offs with two games against other teams fighting for those positions.

Here's the line-up that Chris Wilder is likely to use in a 3-5-1-1 formation...

Blackman keeps his place in goal after helping United stay in the game against Birmingham.

Baldock will be key in drawing Preston to wide areas in order to create openings in their compact 4-2-3-1 shape.

Basham needs to ensure that Tom Barkhuizen isn't able to exploit the space between him and Baldock.

Stearman has the hard working Callum Robinson to deal with.

Similar to Basham, O'Connell needs to ensure that Billy Bodin isn't able to make inside runs through the defence.

Stevens has the same task as his wing-back counterpart, but he can't afford Preston too much space to exploit in the channels.

Lundstram will be important in helping move possession quickly to create a man advantage or a 1v1 situation on the flanks.

Evans will also be important in making sure there is an intensity to United's play in the final third, but he will also be important in the battle for control of the midfield third.

Fleck will occasionally support attacks, but he has to ensure that opposition attacks are broken up in central areas.

The £4.5m-rated playmaker will be key in adding a bit of innovation and creativity to their play in order to create chances and draw opposition players towards him.

Clarke should be back for this game after a back problem. He will be key in converting any chances that United create because they are likely to be limited. This will be a tight game and he could be the difference.