Montpellier president Louis Nicollin has set their asking price for Morgan Sanson.
The midfielder is being tracked by Bournemouth and West Ham this month.
And Nicollin told France Bleu Hérault: "Morgan Sanson will not leave this winter unless we have an offer in the range of €20-25 million.
"He is in Montpellier and will remain in Montpellier. And in the month of June we shall see.
"What I would like is to have him transfer now and to leave him on loan for six months, so to arrange our financial affairs because we are in a very difficult situation."