The 25-year-old is one of the most sought-after strikers in Europe having already scored 24 goals this season and the likes of Chelsea and Manchester City are reportedly interested in him.
But Cavani is only focused on helping Napoli reach the Champions League quarter-finals as the Italian outfit look to protect a 3-1 aggregate lead against Chelsea in Wednesday night's last-16 second leg at Stamford Bridge.
The Uruguayan international, who scored in the first leg, said: "We need to focus on the game. Nothing else concerns me. I'm focused on tomorrow, and not the long-term.
"I might stay for five years. I might stay here for three. You never know."
Cavani is relishing the encounter and added: "I can't say it'll be like any other match.
"It's just fantastic to be playing a game like this.
"When the ref blows the first whistle, I'll forget about everything else and just concentrate on the game ahead.
"We know what to expect and what they can do. It'll be a tough match and a very difficult match for us.
"We saw in the Arsenal against Milan match that a team full of champions can change a tie in a few minutes."