Barcelona look set to be without full-back Dani Alves for a spell due to a groin strain, although Sergio Busquets' ankle problem has been confirmed as nothing serious.
Alves was forced off early in Barca's 1-0 victory over Athletic Bilbao on Sunday, while midfielder Busquets was replaced in the second half after a collision with striker Aritz Aduriz.
The withdrawals somewhat soured Barca's opening-day victory and Alves now faces time on the sidelines after receiving the results of medical tests on Monday.
A Barca statement confirmed the Brazilian suffered a groin strain, but described Busquets' knock as "nothing important".
Luis Suarez provided the winner for Luis Enrique's side - the striker getting the champions' title defence up and running at San Mames after Lionel Messi had a penalty saved.
