Barcelona midfielder Marc Casadó is likely to miss the rest of the season after injuring his right knee during Sunday's 4-2 victory over Atlético Madrid, the club have confirmed.
A statement from Barcelona on Tuesday said: "This morning, additional tests were performed on first-team player Marc Casadó, confirming a partial tear of the lateral collateral ligament in his right knee. He will undergo conservative treatment and is expected to be out for approximately two months."
Sources told ESPN that was likely on Monday.
Casadó picked up the injury during the first half at the Metropolitano, but played on until midway through the second period, when he was replaced by Eric GarcÃa.
Barça said in a short statement he will undergo further tests in the coming days to determine the severity of the problem and the treatment required moving forward.
The 21-year-old was enjoying a breakout season under Hansi Flick after being formally promoted to the first team last summer.
He has featured 35 times across all competitions, with his performances with his club earning him a Spain debut last November.
Marc Casadó has impressed in his debut season for Barcelona. GettySpain coach Luis de la Fuente had also called him up for this week's UEFA Nations League quarterfinal against the Netherlands, but he has been forced to drop out, with Bayer Leverkusen's Aleix GarcÃa taking his place.
Barça defender Iñigo MartÃnez has also pulled out of international duty with Spain this week. Bournemouth's Dean Huijsen has been promoted from the under-21 side to replace him.
"Tests have confirmed that MartÃnez has lateral meniscus inflammation in his right knee," Barça said. "He will be treated in Barcelona under the supervision of the club's medical staff."
ESPN Sources don't expect MartÃnez, who has formed a partnership with Pau Cubarsà in the middle of Barça's defence this season, to be sidelined for a significant amount of time.
Casadó's absence, meanwhile, denies Flick of a key rotation option in the middle of the pitch, although he still has Frenkie de Jong, Pedri, Gavi, FermÃn López and Dani Olmo available, while GarcÃa has also been used as a defensive midfielder, too.
The only other Barça players sidelined for a significant period are Marc-André ter Stegen and Marc Bernal, with defender Andreas Christensen expected to return to training soon.