The Red Devils' biggest August transfer window story was their hot pursuit of a high-profile midfielder to replace club legend Paul Scholes. But their deal for Inter Milan's Wesley Sneijder never came to fruition.
Man United isn't short on talented midfielders, particularly as Ashley Young continues to perform well this season. Tom Cleverley, although he's been on the bench lately, shows promise.
Still, if Sir Alex Ferguson signs anyone new in January, it will probably be a midfielder, particularly one praised for versatility and creativity that can replace Paul Scholes.
Here are six possible candidates who could come to Old Trafford. If there's any we missed or any other midfielders you'd like to see join Manchester United this winter, please tell us in the comments.