Jose Mourinho said: "Nemanja is a Manchester United player and a Jose Mourinho player. He represents everything we want in a footballer; loyalty, consistency, ambition, team player.
"I would like to thank him for his desire to join us because without that, it would be impossible to have him here. I am sure our players and supporters will love him. A big welcome to our new number 31."
Ringing endorsement by JM there, it will give the player a lot of confidence and I see him improving United. His he the best player they could have bought? No, but he improves them in the midfield and is better than what they currently have for the DM position. Chelsea's loss unless they sign a good replacement, their squad is thin as it is.