Sergi Roberto collected his fifth yellow card of the season on Saturday when he was booked in Barcelona's 4-1 win over Celta Vigo at Camp Nou.
The right-back was booked in the 52nd minute of the match after a foul on Junca and will be banned for the game at Butarque against Leganes after the international break.
Roberto had started the game in midfield but moved to right-back when Nelson Semedo was forced off with a calf problem. If the Portugal defender is out for any length of time, Barça could have a problem in two weeks.
Luckily for coach Ernesto Valverde, he does have a third right-back in the first team squad: Moussa Wague. The young Senegal international could finally get his first chance this season.