Barcelona head coach Luis Enrique could be without goalkeeper Claudio Bravo for the trip to Atletico Madrid when La Liga action resumes this weekend.
Bravo, who started the first two games of the new season, is rated doubtful for the clash with Barca's title rivals after suffering a calf injury during a training session on Monday.
The Chile international serves as the Spanish club's first-choice keeper for league duty, while Marc-Andre ter Stegen only features in the UEFA Champions League and Copa del Rey for Enrique's side.
Ter Stegen is now in line to make his league bow for the Catalan giants should Bravo fail to recover in time for the game at the Vicente Calderon on Saturday.
A statement on the Blaugrana's official website read: "Analysis by FC Barcelona's medical personnel has revealed that first-team goalkeeper Claudio Bravo has suffered a muscular injury to his right calf.
"The muscle in question is Bravo's right soleus. He will be closely monitored over the coming days and his availability for this weekend's match at Atletico de Madrid will be determined based on how the injury evolves."