#2 Luke Shaw
The England international may have seen his involvement in the first team increase in the past few weeks, but that by no means guarantees that he will stay at the club. Mourinho has been openly critical of the player in the past and he may be one more error away from being shown the door at Old Trafford.
There's no doubt that Shaw has immense potential in him, but whether or not he will ever achieve the levels expected of him is still in question. Injuries have halted the progress of the left-back, and he may still not be ready to play ninety minutes in consecutive games.
With Ashley Young being used as a left-back this season, it is obvious that United's options in that department are bang average. They could look for an instant replacement in January or could wait until the summer and spend top dollar on one of the continent's finest.
Should they choose to operate in January and offload Shaw, Tottenham Hotspur could seem like a viable destination for him. Danny Rose appears to be discontented at the club and there are murmurs about for a swap deal between the two English left-backs. This could be a good deal for both parties, and would also see Shaw reunite with former boss Mauricio Pochettino.