Italy look set to start Alessandro Diamanti, Mario Balotelli and Antonio Candreva against Brazil this evening.
They face the Seleçao in the last Group A Confederations Cup game at 20.00 UK time (19.00 GMT) in Salvador de Bahia.
The Azzurri started out the Japan match with a 4-3-2-1 system that had Emanuele Giaccherini and Alberto Aquilani supporting Balotelli, but replaced the Fiorentina midfielder with forward Sebastian Giovinco after just 30 minutes.
Some changes are now forced, as Andrea Pirlo has a calf injury and Daniele De Rossi is suspended.
“We are trying out a new system to give even more balance to the side,” confirmed Coach Cesare Prandelli in his Press conference.
During the final training session, Prandelli used Leonardo Bonucci instead of Andrea Barzagli and adopted a 4-3-3 formation.
Riccardo Montolivo moved to central midfield in the Pirlo role, flanked by Aquilani on the right and Claudio Marchisio on the left.
In attack, Bologna’s Diamanti and Candreva of Lazio fanned out around Balotelli.
The training session also saw the system mutate with the same players into a 4-2-3-1 with Aquilani and Montolivo in midfield, Candreva on the right of a trio with Diamanti and Marchisio supporting the centre-forward.
Meanwhile, Stephan El Shaarawy skipped training after bruising his left foot.
As for Brazil, David Luiz has been passed fit despite breaking his nose in the 2-0 win over Mexico, though he could be rested as a precaution.
Lazio midfielder Hernanes is expected to start, as Paulinho sprained his ankle, while Jo and Lucas could step in for Fred and Hulk.
Italy (probable): Buffon; Abate, Bonucci, Chiellini, De Sciglio; Aquilani, Montolivo, Marchisio; Diamanti, Balotelli, Candreva
Brazil (probable): Julio Cesar; Dani Alves, Thiago Silva, Dante, Marcelo; Hernanes, Luiz Gustavo; Lucas, Oscar, Neymar; Jo