Full time: Manchester United 1-0 Sheffield United
Sheffield United are throwing everything forward now but the Depay is able to intercept and break up the move. He dallies on the ball a tad too long and is on the receiving end of a rough challenge. It won't matter too much, the final whistle is about to go...
Rooney sends Long the wrong way and United lead! On the penalty, there did look to be slight contact when Hammond slid in, but Memphis' fall was ridiculously exaggerated.
Goal! Manchester United 1-0 Sheffield United (Wayne Rooney, 90+)
United have a penalty! Depay beat his man cutting in from the left but looked to have taken a dive!
PENALTY - Manchester United
Six minutes of time added on. Can Manchester United draw? The always draw.
Memphis has another go from range, cutting in from the left past Brayford but his low drive again veers just wide.
Martial denied! The ball falls kindly to the Frenchman who lashes one on goal but it is brilliantly blocked by Brayford. The ball spills for Smalling but he connects with fresh air with a wild swing and the chance is gone. Two minutes of normal time left.
Martial slips away from Basham but is quickly swarmed by three Sheffield United players as he tried to find his way to goal. United free kick which Pereira will swing in.
Schweinsteiger trots back on; looks like that wasn't as bad as first feared.
The stretcher is out but Schweinsteiger limps off instead. United have already used all three of their subs.
Pereira floats a ball into the box that Lingard knocks back excellently into the path of Martial but just as he is about to pull the trigger, Hammond makes a brilliant block. Schweinsteiger goes in for the loose ball but is left in agony on the floor after getting a whack to the knee.
This has been utterly, utterly hopeless from Manchester United this evening. They have 10 minutes left to find a winner but haven't for one second looked like scoring.
And here it is, Pereira comes onto replace the hugely ineffective Fellaini.
Looks like there will be another change for United soon with Andreas Pereira now getting ready.
Lingard works the ball inside from the left to Fellaini who shifts it onto Schweinsteiger who winds one up from outside the box. His connection with the ball is woeful however and he slices a shot well wide.
Memphis has given a slight lift to his side since coming on. He drives in from the left, skipping past his man before pinging a cross in but it's deflected for a corner. United do nothing with it.
Darmian shows a wonderful bit of skill to clip the ball away from an onrushing defender as he reaches for a loose ball inside the box but he can only toe poke a tame shot on goal in the end. At least it's one on target.
Now we've got one! Chris Basham slips past his man and tries a shot from 20 yards out but it's driven straight at De Gea. 66 minutes in.
No shots on target again, by the way.
Depay comes close! Passing isn't working so the Dutchman lets fly with a powerful effort from 25 yards out that veers just wide of Long's post.
Now it's a change for Sheffield United as Billy Sharp comes off for Ryan Flynn. Sharp is not happy with that.
Van Gaal is changing things up, Memphis Depay and Jesse Lingard are on for Ander Herrera and Mata.
Sheffield United almost catch the home side out as Paul Coutts slips inside Borthwick-Jackson down the right but his ball across goal is forced away by United.