#2 Andreas Pereira
The midfielder has spent the last two seasons in La Liga on loan. Since making his senior debut for Manchester United in 2014, Pereira has only five appearances to his name. Under Mourinho, it seems extremely unlikely that he will have any future in Manchester.
The 22-year-old has a contract which is due in summer 2019, but Valencia are keen to get him on a permanent deal. His influence in the midfield has helped the Spanish side to a position in the top four. Meanwhile, Mourinho will have to put in a great deal of effort if he wishes to persuade the youngster to stay.
With experienced players such as Nemanja Matic, Paul Pogba and Juan Mata in the midfield, it seems too crowded to find a way to fit Pereira. Hence, the Brazilian may be better off joining the La Liga side from next season onwards.