Sampdoria coach Ciro Ferrara admits his loyalties are split over the race for the Scudetto this season.
"I never know who to cheer on," Ferrara told Mediaset. "Last season Juve won the Scudetto and Napoli lifted the Coppa Italia.
"I do believe Napoli can challenge for the title. They have matured and have more strength in depth compared to last year.
"Juve have something more in terms of mentality and history, but I don't know if they'll have the same hunger as last season."