Chelsea boss Thomas Tuchel believes PSG striker Kylian Mbappe is capable of becoming the world's best player.
Talk of a changing of the guard heightened last week after Mbappe's dazzling performance at the Nou Camp against Leo Messi's Barcelona.
"If he wants to be there, he has to push them [Lionel Messi and Crisitano Ronaldo] aside. That is clear," former PSG coach Tuchel told BT Sport.
"Scoring a hat-trick at the Nou Camp is a message and it's what he demands of himself. It is his potential, it is what he has in him.
"He's a shark. In his mentality, he wants to grab everything that he can have. This is the mentality that you need.
"And I mean it in a positive way because he's a nice guy in private and in person, super nice guy, super intelligent, super funny.
"But once he's on the pitch he's a shark and that's what the best guys are. If you drop one drop of blood in the water they arrive, and this is Kylian."
