It's a different Manchester United with Paul Pogba. Against Newcastle United, his range of passing, his ability to protect the ball and his athleticism were qualities that were missed when he was gone.
Now, Jose Mourinho has many more options in terms of what he does with his front four because Pogba's presence allows you to do things -- like play Anthony Martial and Marcus Rashford together -- you might not do with Ander Herrera and Nemanja Matic sitting in front of the back four.
And if that wasn't enough, United's manager has another huge option (literally) in the form of Zlatan Ibrahimovic.