Manchester United hero Teddy Sheringham fears his old club could be undone by title rivals Chelsea.
Sheringham, who helped United win the Treble in 1999, insists that would be the wrong approach.
He told talkSPORT: "United have got a great cushion, 2-0 up, but I think Sir Alex will put out a full team and get the game won, and then rest people with half an hour left.
"If you do come unstuck by playing a weakened team, you could lose 2-0, go to extra-time and then everything's chaos and it could spill over into Sunday's game.
"So I think they'll get that one out of the way first and then focus on who's fit, ready and able to take on a charging Chelsea team."
