Dries Mertens will continue to be assessed after Napoli's leading goalscorer suffered an ankle injury.
Mertens netted the opener in a 2-0 win at local rivals Benevento on Sunday to send Maurizio Sarri's side back above Juventus and into top spot in Serie A.
In a brief statement released on Monday, Napoli indicated Mertens' injury is not serious but placed no timescale on his recovery.
Dries Mertens has suffered a light Grade I sprain to his left ankle. His fitness will be assessed during training tomorrow February 5, 2018
"Dries Mertens has suffered a light Grade I sprain to his left ankle," Napoli posted on Twitter. "His fitness will be assessed during training tomorrow."
Mertens has hit 14 goals in Serie A this term to help Napoli sit a point clear of champions Juventus at the top of the table.
Napoli are next in Serie A action at home to Lazio on Saturday before taking on RB Leipzig in the Europa League on February 15.
