Kylian Mbappe's meteoric rise in European soccer has been well-documented, and the biggest story for the Frenchman this summer is whether or not the Monaco attacker will return to the Ligue 1 champions next season.
'He has to make a decision also thinking about his game minutes, because this is the year of the World Cup.
"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", Trezeguet said after a France Legends v Italy Legends match.
"Can he take that risk?"
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Mbappe is believed to be on the wishlist of nearly every major club in European football, with Real Madrid, Manchester United, Paris Saint-Germain and Arsenal just four of the teams that have been linked with a move.
However, Petit has highlighted the case of Martial, who was a high-profile departure from Monaco when he joined Manchester United in 2015.
"Remember two years ago we had nearly the same example with Martial - he left Monaco for Manchester United", the former French worldwide explained.
The Metro reported earlier in the month that Manchester United had failed with an opening £113m offer for Mbappe as Jose Mourinho looks to buy a top class striker this summer after losing Zlatan Ibrahimovic.
"Talent is something very important in football but you need to have confidence as well from team-mates and your manager".