Yasser, who wasn't at his best during Qatar's 1-1 home draw with 10-man Bahrain, sustained the problem with five minutes remaining.

But despite being in obvious pain, the 24-year-old completed the match as Qatar's three substitutions were already made.

It is not yet known what kind of injury the talented winger has suffered.

Yasser joined Cairo giants Ahli in the close season after his contract with Portuguese side Boavista expired.

Although he arrived with high expectations, with Ahli fans considering him as Mohamed Barakat's successor, Yasser was given limited opportunities so far this season.

He featured in Ahli's 3-0 friendly defeat to AS Roma and came on as a late substitute in the 2-0 Egyptian League loss to Masri.