Manchester City defender Aymeric Laporte is set to miss the rest of 2019 after undergoing surgery on his right knee, leaving the team short of center-back cover for its Premier League title defence and the group stage of the Champions League.
Laporte had the operation in Barcelona on Tuesday after "damaging his cartilage and lateral meniscus" during the 4-0 win over Brighton in the Premier League on Saturday, City said.
City didn't give an exact timeframe for Laporte's absence, but the nature of the injury means he is unlikely to play again until the new year.
"A more detailed prognosis will be provided in due course," City said Wednesday.
A lengthy absence for Laporte, who was described by City manager Pep Guardiola last week as the "best left-sided central defender in Europe," is a major blow to the English champions, who released long-serving captain Vincent Kompany in the offseason and have another center back, John Stones, currently out injured.
That leaves Argentina international Nicolas Otamendi, who was largely overlooked last season, as the main center back available to City.
Fernandinho, a center midfielder, filled in as a center back off the bench against Brighton on Saturday. Guardiola has previously mentioned he could use the Brazil international in that position more often this season.
City are in second place in the Premier League with 10 points from a possible 12. Liverpool lead after winning all four of their games and are again expected to be City's biggest rival for the title.
The group stage of the Champions League begins this month and concludes in December.
Laporte was called up by France last week for the first time since 2017 ahead of European Championship qualifiers against Albania and Andorra. He hasn't played a game for his senior national team.
"I am sad for not being able to join the national team and to not fulfil my dream of making the debut with Les Bleus," Laporte said in a post on Instagram. "From now on we start counting down the days to go back on the pitch."
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Bonjour à tous, Suite à l'opération réalisée avec succès hier en debut de soirée, je souhaitais vous remercier pour tous vos messages de soutien ces derniers jours. Je me sens vraiment soutenu et reconnu! Ma condition physique ne me permettent pas d’aller en Equipe de France, je suis triste de ne pas réaliser mon tant attendu début avec les bleus. Je suis reconnaissant envers le sélectionneur de m'avoir transmis son soutien et ses encouragements. A partir de maintenant, nous décomptons les jours pour mon retour sur les terrains. Hi everyone! After successful completion of yesterday evenings surgery, I would like to say thanks for all your messages of support during the last few days. I feel trully loved and so thankful about it. I am sad for not being able to join the national team and to not fulfill my dream of making the debut with les bleus. I would like to thank the Coach for being so supportive. From now on we start counting down the days to go back to the pitch. Hola a todos, Tras la operacion realizada con éxito en la tarde/noche de ayer, dar las gracias por los mensajes de apoyo durante todos estos dias. Me siento muy querido y agradecido. Al no estar en condiciones fisicas, me siento triste por no poder acudir con la seleccion francesa y no haber podido hacer realidad el tan esperado debut con los blues. Agradecer al seleccionador por transmitirme su cercania y animo. A partir de ahora empezamos a restar dias para la vuelta a los terrenos de juego. #AL #FFF #mancity 🇫🇷 🦈