Manchester United manager Ralf Rangnick is said to be a long-term admirer of Chelsea defender Antonio Rudiger with the player's future still up in the air - and the Blues will reportedly need to make him the top-paid defender in the Premier League if they want to keep him next season.
The centre-back's contract is set to expire at the end of the 2021/22 season and an agreement is yet to be reached on a new deal.
Real Madrid, Paris Saint-Germain and Tottenham have all been linked with a free transfer, with Chelsea still hopeful of agreeing fresh terms with the German.