#2 Daley Blind
The versatile Dutch international was brought in by Louis van Gaal in his first transfer window at Manchester United and looked at ease with the possession football implemented by the Dutchman at United. He has earned the reputation of a utility-man, featuring at left back, center back as well as central midfield under Louis van Gaal.
While Blind is adaptable and can play numerous positions, he might not be able to guarantee himself a first team spot under Mourinho. The 25-year old is not a natural centre-back and has too much competition from Luke Shaw at left fullback. Blind also lacks the dynamism that Jose Mourinho expects from his midfielders to play in defensive midfield.
While Blind is versatile enough to play in numerous positions, Mourinho is likely to have better options to play in those positions with United likely to reinforce their defence and midfield which will result in the utility man seeing reduced minutes on the pitch.