Ronaldo is currently contracted to the Bianconeri until the end of next season, but following the club's elimination from the UEFA Champions League and failings in the league, he has been linked with a move away in the coming months.
Former clubs Real Madrid and Manchester United have both been credited with an interest in re-signing the five-time Ballon d'Or winner in recent weeks, but it now appears that he may have chosen to return to another one of his past employers instead.