MANCHESTER UNITED star Victor Lindelof has suffered an injury on international duty.
The Swede, 30, lined up for his country against Slovakia in the Nations League on Saturday.
Lindelof wore the captain's armband, but was forced off less than half an hour into the contest.
The extent of the centre-back's injury is not yet known.
But he needed to be helped off the pitch by two members of Sweden's medical staff, before later being seen on crutches.
Lindelof has struggled for action at Man Utd so far this season.
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He began the campaign with a toe injury, which ruled him out until late September.
He is yet to start a game in the Premier League this term, and has played twice in the Europa League.
His hopes of impressing new boss Ruben Amorim may have been dashed by his injury woe.
Amorim, 39, is known to have deployed a back three formation at Sporting.
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With Harry Maguire and Leny Yoro having both missed time this season, Lindelof will be keen to stake a claim.
Earlier this week Amorim was dealt a significant blow with Argentine national team medics having identified a "significant hip injury" in Lisandro Martinez.
The defender will now be assessed by Man Utd's medical staff.
Amorim is set to take charge of his first game as Red Devils boss next Sunday.
Following the conclusion of the international break, United will travel to Portman Road to take on Ipswich.
Amorim has received one fitness boost, with full-back Tyrell Malacia having returned to action for Man Utd's Under-21s following 17 months out with a knee injury.