Barcelona says midfielder Rafinha will need knee surgery and is expected to be out for the rest of the season.
The club says tests have confirmed a torn anterior cruciate ligament in Rafinha's left knee. He will undergo surgery in the coming days.
Rafinha got hurt in the team's 1-1 draw at Atletico Madrid in the Spanish league on Saturday.
The Brazilian had torn a ligament in his right knee in 2015, and had a meniscus injury in the same leg in 2017.