The Mirror says Nani continues to refuse to sign a new contract and, with just over a year left on his current deal, United will not want the Portuguese winger to leave for nothing in 2014.
Dutch defender Alexander Buttner and Danish keeper Anders Lindegaard are also coming under scrutiny.
And United will face a fight to convince Javier Hernandez to stay at the club unless he gets a guarantee that he will start more games.
Are the trio mentioned the players United should sell? Give us your shout below...