However, he insists the Frenchman isn't ready for such a move yet.
“He's a talented player. He's shown that he's capable of doing something for Newcastle," he told ESPN FC.
“Maybe he's not helped by his team-mates. If nobody asked him to come over (from Nice) except Newcastle, maybe there is a reason why.
“He has to show more consistency, and he has to show more professionalism in order to convince other clubs to sign him. He has the talent to play in a bigger club, that's for sure."