French champions Monaco have threatened to report any club that make an approach to Kylian Mbappe without their permission.
Mbappe, 18, has reportedly already been the subject of a €120 million offer from Real Madrid, with Arsenal, Man United, PSG and Barcelona all linked with moves.
The teenage striker is in high demand after scoring 15 goals as Monaco won the Ligue 1 title and a further six as the club reached the semifinals of the Champions League. But Monaco have hit out at any club interested in signing him.
AS MONACO regretfully notice that European football clubs made contacts with Mbappé without its authorization.https://t.co/eTdmgefBko— AS Monaco EN (@AS_Monaco_EN) July 20, 2017
A statement read: "AS Monaco regretfully notice that 'important' European football clubs made contacts with Kylian Mbappe [and his entourage] without its authorization.
"AS Monaco want to remind to these clubs that such actions are contrary to the article 211 of the Administrative regulation of the French Football League [Ligue de Football Professionnel] and to the article 18.3 of the Regulation of the Status and the Transfer of the Players of FIFA.
"To put an end to this unacceptable situation, AS Monaco consider asking the French Football League [Ligue de Football Professionnel] and the FIFA to commit disciplinary procedures against clubs offenders."
Reports on Thursday said Manchester City were the only English club to be a target of the accusations, but there was no comment from the Etihad Stadium.
Pep Guardiola's men are currently in negotiations with the French champions regarding full-back Benjamin Mendy.