#5 Nemanja Matic
Nemanja Matic is the wisdom in the United midfield that is full of poise and energy right now. The Serbian was brought to United as a defensive midfielder, a role he had regularly carried out under Mourinho. However, because of Mourinho's inclinations to sit deep, Matic was often overrun in the middle and it had cause United a lot of problems. This is why Solskjaer's arrival has suited him well.
The Serbian's foremost responsibility still involves shielding his defense, but once he is on the ball, Matic has been encouraged to find his team mates and play those cross field balls more. Because United have made good use of his passing abilities, Pogba has been able to push up in the field.
Matic is still the man with the most passes for Manchester United. He is the one who orchestrates the proceedings from the middle, the one who has the responsibilities to keep the ball ticking. Solskjaer has helped the Serbian dominate the middle of the park again and Matic is one of the pillars of this United team.