The San Paolo side finished third in Serie A last term and Cavani is of the opinion that they've only become stronger following a superb transfer campaign.
"The sky is the limit for Napoli. Serie A, Champions League and Coppa Italia: we will do our utmost in all competitions," Cavani said to Il Corriere dello Sport.
"Last year's third place and the club's excellent work in the summer transfer window gives us the morale to fight right until the end.
"We have everything it takes to have a successful season. It's impossible not to do well with such fantastic fans. We are very optimistic."
Napoli meet Cesena on September 10 in their first match of the 2011-12 Serie A campaign before taking on Manchester City in Group A of the Champions League next Wednesday.
