Tottenham boss Martin Jol accepts it will be a big task keeping his four senior strikers happy this season.
Jol said: "Robbie has been the most influential player in the last couple of seasons. He has always been there when I have needed him and is an influential figure in the dressing room.
"But it is about the players as well, not just me.
"They know they have to compete for places and anyone who wants to come here has to do that against Robbie Keane, Berbatov, and Defoe.
"If they are still brave enough to come here then they are good players."