Gonzalo Higuain's agent says that unless the Napoli president agrees to lower the release clause in the striker's contract, he will not renew it.
The Argentina international wants the €94 million stipulation reduced before he agrees to new terms, a requirement his representative, and brother, says is a non-negotiable.
Higuain has two years remaining in his current contract with the Naples club and their president, Aurelio de Laurentiis, will be extremely motivated to either keep hold of the Serie A top scorer or cash in on the significant amount of interest in him.
"This is the situation," Nicolas Higuain told Closs Continental. "The president is asking for the clause to be paid to let go of Gonzalo, and we have the right to refuse to renew.
"We arrived at Napoli with the promise of a successful project. Playing in the Champions League and winning the Scudetto, with improved facilities and a desire to grow.
"It wasn't right of the club to ignore those commitments. Aurelio De Laurentiis has every right to demand the clause in his contract be paid, but my brother and I have decided not to accept a renewal.
"We'll see what happens next year with Napoli, given that his contract expires in 2018 when he turns 30. For now we'll continue to abide by the contract, after that I don't know what will happen, whether a club will be able to buy him or not.
"We have a contract with Napoli and, as a great professional, Gonzalo will continue to respect it. He'll train correctly and give his all. But it absolutely won't be renewed if things stay this way."