Athletic Bilbao defender Andoni Iraola is a major doubt for the club's game against Barcelona on Saturday.
The 30-year-old vice-captain suffered a setback in training today and is likely to miss the trip to Camp Nou after he limped out with a thigh injury.
The Spain international has been an ever-present in Marcelo Bielsa's side this term having started all 13 League games so far.
