Vlad Chiriches is set for a spell on the sidelines with a problem shoulder that may require surgery.
The 27-year-old Romanian international has dislocated his shoulder on a few occasion in recent months.
This has limited him to just two appearances for Napoli this season.
Romania Federation counsellor Andrei Vochin told Telekom Sport that they discovered a loose ligament in Chiriches' shoulder that may require surgery,
He said: "At Napoli they still don’t know what we discovered.
“Our medic tells us that Chiriches has a loose ligament in his shoulder. That means that with every challenge or clash, the shoulder risks popping out of joint and giving him a lot of pain. It’s happening increasingly more often.
“It is similar to what used to happen to Cristian Chivu.”