Giorgio Chiellini should be available for the Napoli tie after the Juventus defender picked up an ankle injury on his return to action.
The stopper, absent since December, was used as a second-half substitute in the 3-0 win over Siena on Sunday.
However, the central defender limped out of the game after picking up a blow to his right ankle.
The Italian international has had an x-ray which has ruled out any serious damage as the club have revealed that he has just sustained heavy bruising.
Juventus travel to the Stadio San Paolo on Friday night.