The Italian midfielder has been linked with a return to Serie A this month.
"I'm staying here until the end of the season then, seeing as I am only here on loan, I will go back to Napoli before assessing what to do next."
"Napoli? They are a great team and I got on well with my teammates, the club and the city itself," he continued.
"I had to leave, but I don't regret my experience with Napoli and it would be a pleasure to rejoin them."