Marouane Fellaini rejected a new contract offer from Manchester United in September and could leave the club in the summer.
Fellaini is thought to earn around £120,000 a week after United triggered a one-year extension in January and raised his salary from £80,000 a week.
Jose Mourinho will not sanction a sale of Fellaini during the January window and will risk losing him for free.
Mourinho continues to hope United can extend Fellaini.