Rennes president Nicolas Holveck has admitted the club could lose Eduardo Camavinga this summer.
Manchester United, Real Madrid and PSG are all serious about signing the 19-year-old midfielder.
The France U21 international is reportedly available for £25.7m, with his contract set to expire next summer.
Holveck says Rennes are in talks to extend his contract but could not guarantee Camavinga would re-sign.
"Discussions are still ongoing, everything is open, either for a departure during this transfer window - if an offer satisfies everyone - or to extend (his contract)," Holveck told RMC.
"He won't leave for cheap, we've had a lot of discussions but nothing is complete one way or another."
