Manchester United , Manchester City and Real Madrid have been put on red alert after Monaco president Dmitry Rybolovlev stated they will not stand in the way of Kylian Mbappe leaving during the summer.
Mbappe is one of the hottest properties in European football following his superb run of form this season.
The teenage superstar netted 15 goals to help Monaco win the Ligue 1 title for the first time in 17 years and was also one of the leading goalscorers in the knockout stages of the Champions League as he helped his side reach the semi-finals.
Reports have suggested that Monaco have already turned down a world record fee of around £103million from Real Madrid for the 18-year-old.
But Rybolovlev says the club will not stand in Mbappe's way if he wants to make a lucrative move and join one of the big clubs in Europe.
Rybolovlev, speaking in L'Equipe, said: “We are not here to decide in the place of men, block them, tell them yes or no.
“We have no budget problem and we are not forced to sell, but the day when a player or coach wants to leave, it’s just unimaginable to keep him against his wishes.
“We are not Real Madrid or Barcelona or Manchester. Everyone has to cross the road in his career to go even higher. You do not keep a man against his will.
“In business, if you go against the market and against the trends, you will always lose. Later, if someone goes, this is not our initiative. You know, [Anthony] Martial, it was he who wanted to leave and we can understand that.”