The Uruguay star expects to be released for the London Games this summer.
"I want to go to the Olympics," said Cavani. "I will not accept a 'no' from Napoli. I've already spoken to them about it and made it clear I want to play for my country.
"I'm ready to battle for Uruguay if they need me.
"If Napoli don't allow that then I will firstly return to Italy, cause unimaginable trouble and then I'll go to London anyway."