Chelsea boss Benitez: Mata can do the lot
Mata was the matchwinner in victory at Manchester United on Sunday.
Benitez said: "Sometimes we have some players growing, and Mata is one of these players.
"I said he could be player of the year, for everything he does for us, scoring goals, giving assists.
"He is a very influential player in the game.
"You can see a lot of the other players growing too. That is what we have to do."