Born in Castellammare di Stabia, a suburb of Naples, the striker grew up backing the Partenopei before playing for the club for a season in 2009-10.
“It’s going to be a great game for anyone who loves the sport,” he told Juventus Channel.
“We are two extraordinary teams, and I am convinced it will be a great game. It’s going to be a special match.
“Napoli are my team, the side that I have always supported. We know that we’re going to have to keep errors to a minimum if we’re going to win.”
Last season’s top two sides are currently ended on 28 points after 11 games, three behind league leaders Roma, who will be meeting Sassuolo earlier on Sunday.