Barcelona goalkeeper Marc-Andre ter Stegen looks set to be sidelined for the Spanish champions' next three matches, including the Champions League clash next week with Celtic, after suffering a hamstring injury on Friday.

Spanish media sources reported the German international picked up the problem in training, but is hopeful of being fit in time for Barca's crucial La Liga showdown with Atletico Madrid on September 21.

As well as the home game with Celtic on Tuesday, he is out of the matches against Alaves on Saturday and Leganes on September 17.

Ter Stegen's injury should clear the way for Dutch 'keeper Jasper Cillessen to make his debut against Alaves at the Camp Nou.

Cillessen joined from Ajax last month to replace the departed Claudio Bravo after the Chilean joined forces with former Barca boss Pep Guardiola at Manchester City.