#8 Thomas Meunier
Antonio Valencia is Mourinho's only trusted right-back at the moment, as Matteo Darmian has flattered to deceive every time he has been given an opportunity. Valencia will turn 33 years old by the time next season starts, though, hence United will find themselves a right-back short if Valencia ends up being injured for some matches. Signing a proper right-back should be one of the objectives in the upcoming transfer window for United.
Thomas Meunier is a modern fullback who can carry out his defensive and offensive duties effectively. His positioning and quick feet help him in his defensive work, and hence the Belgian is a solid defensive prospect.
His attacking contribution is impressive too, as he cuts in from the flank and links up with his forwards to storm inside the penalty box and creates a chance, or scores a goal too.
He has scored four goals and assisted thrice in 19 appearances in the league, however, Dani Alves’ presence has stalled his playing time to a certain extent and a move ahead to United will be beneficial for him and the club too. PSG might have to release some players in order to follow the regulations of the Financial Fair Play rules and United should take advantage of this situation.