Rio Ferdinand insists Manchester United are capable of reigning in Premiership leaders Liverpool and Chelsea.

"I have been in both positions, leading from the front and playing catch-up and there's pressure in both situations," he said.

"United have lost titles from being loads of points ahead and won it from being a long way behind. So I don't think it matters at this stage of the season where we are.

"But we know we can't afford any more slip-ups."