Everton boss Roberto Martinez hopes to keep hold of Marouane Fellaini.
Martinez says Fellaini has a "massive influence" around the club.
He said: "Marouane is an international footballer and he's going to be involved, if all goes well, in a World Cup next year.
"He's had a fantastic impact in the Premier League and hopefully now is the time he can carry on showing his massive influence in the game for us. He's still a very young man but I am really looking forward to seeing Marouane working hard and making sure that he sets really good standards at this club."