Arthur Masuaku must return to Sunderland after his loan. The defender is not present at the current American internship. His contract with the English club runs until 2027. The left side Arthur Masuaku finds himself in a rather blurred contractual situation. After a passage to RC Lens, where he was operating under a loan without option to buy the player is now obliged to resume training with Sunderland. He is contractually bound with the English…