Barcelona forward Ousmane Dembele has been ruled out for six months after undergoing surgery on a leg injury.
The 22-year-old France international withdrew from training on 3 February as he suffered a rupture to the tendon of his right thigh.
Barca said on their official website that former Rennes and Borussia Dortmund player Dembele, who has made only five La Liga appearances this season, was expected to be out of action for six months.
Dembele moved to the Nou Camp from Dortmund in August 2017 and has scored 19 goals across 74 appearances in all competitions for the Catalan club. This is Dembele's 10th injury since his arrival.
The Spanish champions will be allowed to make an emergency signing to replace him provided the Spanish football federation ratifies Dembele's medical report.
Rules dictate that if a player is out injured for at least five months then their club can sign a replacement outside a transfer window, as long as they are based in Spain's top two divisions or they are a free agent.
The injured player is not allowed to play again for the team before the five-month period has elapsed and must agree to the arrival of the new player.
Barcelona have been linked to Real Sociedad forward Willian Jose by Spanish media.
Barcelona are currently second in the league table, three points behind rivals Real Madrid.