Manchester United star Marouane Fellaini has caused concern after suffering what appears to be knee ligament damage whilst on international duty.
The 29-year-old was turning out for Belgium against Bosnia Herzegovina, and was moving with some difficulty after they went 1-0 up. He eventually signalled to the bench after laying on the floor in pain.
The former Everton star appeared to gesture towards his left knee, and medics treated him briefly before Roberto Martinez replaced him with Leander Dendoncker.
The manager added after the game, as quoted by Sky Sports: "We are all worried about Fellaini. We fear that there's ligament damage."
The Belgian FA did little to ease the fears of United fans, and added: "It is something to be worried about on first sight. Ligaments, left knee. More news tomorrow."
Fellaini's withdrawal was clearly felt as it allowed Bosnia to equalise, but the already-qualified Belgium went on to win 4-3 in the end.
It remains to be seen how long Fellaini will be out of action for, but it is certainly a blow for United fans who watched him enter somewhat of a purple patch with four goals in his past five games for the club - an announcement is expected on Sunday, and there is fear that he will miss the crunch clash against Liverpool on October 14.