Milan - Napoli have warned potential suitors off striker Gonzalo Higuain by claiming the Argentinian has a buy-out clause of almost €95m in his contract.
Higuain is rumoured to be on his way out of the Serie A club following their failure to qualify for next season's Champions League and has recently been linked with a €50m move to AC Milan.
But Napoli, via a Naples radio station, said potential buyers would have to pay the amount to release Higuain - who is currently at the Copa America with Argentina - from his contract.
Higuain joined Napoli from Real Madrid on a five-year deal for €40m in 2013 and has scored 35 goals in Serie A since then.
Former Empoli coach Maurizio Sarri was appointed coach of Napoli earlier this month after Rafael Benitez quit to take over at Real Madrid.