Grint has so far barely branched out from the wizard series into other films. But the man behind Taxi Driver, Raging Bull, Shutter Island and Goodfellas believes Grint’s career could off.

The New Yorker said: “I thought he was great in the Harry Potter movies – in a lot of scenes, the boy stole the show.

“He will always have respect for the movies that gave him such a huge break, but at his age it's important he doesn't become typecast. He has to do something really out of his comfort zone in the next few years – play a gangster, play a dirty cop, play a kid with learning difficulties."

Excitingly for the young actor Marty continued: "I would be very interested in working with him. I would have no issues in casting him as a gangster. He is a very talented young man."

"When Leo was in Romeo and Juliet, nobody saw him becoming a badass in movies like The Departed. But he has become one of the greatest actors of all time. The very same could be true for Rupert."

Yesterday it was revealed that Jude Law, Sacha Baron Cohen and Ray Winstone will appear in Scorsese’s next film Hugo Cabaret, which has just started shooting in the UK.

It will be the director’s fist foray into 3D.