#1 Toni Kroos
Toni Kroos is arguably one of the best creative midfielders in the world, if not the best, and Jose Mourinho is a huge admirer of the player. Kroos has played a stellar role for Real Madrid in their hat-trick of Champions League title wins.
The 28 year-old is regarded a lot for his vision, passing, and technique. With a combined passing accuracy of 93.3 in La Liga and the Champions League this season, he could bring ruthlessness to United’s attacking play.
He controls the tempo of the game beautifully and can play in several midfield positions. He has scored 5 goals and assisted 8 more for Madrid this season. Though Manchester United have the likes of Paul Pogba, Nemanja Matic, and Ander Herrera, they have all struggled to dominate games in midfield.
Kroos could be the missing piece in Mourinho’s midfield and also bring the best out of Paul Pogba. Also, Michael Carrick’s retirement and the uncertain future of Fellaini is a contributing factor behind Mourinho's search for a quality midfielder.