He said: "I'm not setting targets for the lad. But the boy's form demands attention and he's getting plenty of that. His form has been fantastic. There is no end to where we think he can go.
"He has the world in front of him. He's so quick. His speed with the ball is the real asset he has. He's probably just as quick running with the ball as without it.
"There have been a few players like that in the past. Maradona, for example. Ronaldo is similar."