#2 Alexis Sanchez
The Chilean's arrival at Old Trafford in January was met with high expectations owing to his great performances during his initial time at Arsenal.
However, Sanchez is yet to show the Reds faithful the kind of edge he had playing for their North London rivals.
Ahead of their trip to East London for their game against West Ham, Jose Mourinho gathered the players for a team meeting. According to The Times, the manager gave the Chilean a dressing down for his poor performances so far in the campaign.
It is no coincidence that the former Arsenal man was dropped from the squad playing against the Hammers. When asked why he did not play Sanchez, Mourinho told BT Sport, "Options, it’s options."
Reports have now emerged that the manager has warned Sanchez that he may never play for Manchester United again unless he changes his attitude.
According to the Daily Mirror, Sanchez even spoke with his former Arsenal teammate Lucas Perez about the fact that he may have joined the wrong club.
A report in The Sun even claims that Mourinho is fed up with Sanchez's questioning his tactics and whining for more game time.
Despite interest from Manchester City, Sanchez signed a £500,000-a-week contract with United this January.