- The Portuguese superstar begins his second campaign in Turin after securing a title in a third major European league last season
- The teenager has the opportunity to become a key player in the Juventus defence alongside veterans Giorgio Chiellini, 35, and Leonardo Bonucci, 32
- The ex-Chelsea and West Bromwich striker has been angered by suggestions he lacks fitness for Sunday's opener against promoted Lecce
Eight-time holders Juventus begin their title defence and Napoli will be looking for their first Scudetto in 30 years as Serie A returns in Italy this weekend.
Juventus, without new coach Maurizio Sarri, travel to Parma on Saturday, boosted by the signings of Matthijs De Ligt, Aaron Ramsey and Adrien Rabiot this summer with veteran goalkeeper Gianluigi Buffon back in Turin.
Carlo Ancelotti's Napoli head for Fiorentina, with the Tuscany side boosted by the arrival of former French international Franck Ribery on a free transfer from Bayern Munich.
Chinese-owned Inter Milan have also spent big for Antonio Conte's first season in the San Siro with Romelu Lukaku arriving for 65 million euros ($72 million).