The 23-year-old is regarded as one of the brightest strikers in world football, with Paris Saint-Germain the latest club to be linked with his services.
However, Oscar Damiani told France Football: "Paris are following him, but we don't know who will be the coach there next season.
"There are also a lot of forwards in their squad. If it is important for him to leave, it is more important for him to play.
"We have not yet decided if it would be better for him to join an intermediate club or join a big club immediately."
A host of European clubs are also believed to be monitoring proceedings.