The 33-year-old talisman suffered an injury to his right knee against Napoli on October 4 and hasn't played ever since.
He has so far avoided surgery, but says: "I am fine. Now I am going to train at Trigoria.
"I never spoke about an operation. I never took it into consideration. I never said it. I don't know when I'll return. I am going to train and then we'll see."