David Trezeguet believes Kylian Mbappe needs to prove himself at Monaco, before seeking an exit.
The teenage sensation impressed at Monaco last season and is the subject of a big money transfer to top European clubs.
However, former France international and Juventus and Monaco star, insists it is too early for Mbappe to leave Monaco.
“In the semi-final, we played Monaco with Juventus, and we knew he is a player with a great future and that’s the most important thing,” he told reporters at a France Legends v Italy Legends exhibition game.
“He is aware of his qualities, he is aware he is just… 18 years old so he has a good opportunity at Monaco because it is a beautiful city, and a world-class academy.
“But everything goes fast in football. Monaco has known a special case with Anthony Martial going to Manchester [United].
“Of course, the economic part is important but I think with time things happen naturally.
“I think he still has to prove his qualities with Monaco, even if he will have the last word.”