The 23-year-old has been linked to the likes of Arsenal, Liverpool and Newcastle recently and admits that he could be forced to look elsewhere for first-team opportunities after finding it difficult to dislodge the first-choice centre-back pairing of Thiago Silva and Alex.
|85/40||France are 85/40 with BetVictor to keep a clean sheet against Spain
"Mamadou is the future of the club," the 40-year-old told Le Parisien. "It is impossible he could leave. Sometimes I also had bad thoughts as a player. He has to reject them.
"Of course he needs to hear that he is important but sometimes he has to remain quiet. Mamadou has now reached a level where he cannot act as a child and ask for affection. He is a professional.
"He is in a world where the strongest ones don't say anything. The more Mamadou shows his power on the pitch, the more it will be impossible to not play him because he is just a great defender."