Napoli captain Paolo Cannavaro feels Ezequiel Lavezzi will be the difference at Chelsea this week.

The Azzurri won the first leg 3-1 and visit Stamford Bridge on Wednesday evening, where they'll face new manager Roberto Di Matteo.

"We will play our game at Stamford Bridge and will certainly give our all," the captain told Rai Tre ahead of the Champions League clash.

"The real Napoli has been back for a while now, as we rediscovered our determination and desire to win."