Barcelona have been hit by an injury blow to captain Sergi Busquets.
Busquets's injury was the only bad news from Barca's 3-0 win over Sevilla on Sunday.
He sprained his ankle and had to go off injured early on, replaced by Franck Kessie.
Barcelona published a statement saying "he has a sprain on the external lateral ligament of his left ankle".
The club did not state an absence time but he is expected to miss two to three weeks.
That means he is a doubt to face Manchester United in the Europa League qualifying round first leg and will not face Villarreal on Sunday.