French super junior Hannibal Mejbri is expected to be tempted away to England.
Nantes transfer chief Matthieu Bideau told L'Equipe: "The last time we had in France a phenomenon of this magnitude around a young player, it was Kylian Mbappé.
"In France, it will be played between Lyon, Monaco and PSG. But I think the English hold the rope. A signing bonus of several hundred thousand euros is to be expected. He seems to be very well protected by his family.
"But it is not always idyllic to manage a kid who is wanted by all the great European clubs. It's harassing, it eats into life on a daily basis. I advise the family to surround themselves legally. It's risky to wait to sign when he already has the biggest clubs who want him."