Manchester United captain Bruno Fernandes has welcomed new signing Mason Mount.
Fernandes feels the former Chelsea midfielder will lift standards at United.
He said: "We need that aggression and passion, we need players to be like that in games. These are the kind of players that I like to play against and even more to have in my side.
"Now, I will do everything I can to defend him."
He added: "I said a couple of years ago that he is one of the best players in the Premier League.
"We're really happy to have him here, wherever he plays, as a No10, No8 or a winger. He's really good at pressing, he has a lot of energy and he's really good on the ball. He has goals and assists in him too.
"We're expecting a lot from him but he's aware of that.
"He's knows expectations will be big. He has a point to prove like everyone else."