Real Madrid goalkeeper Thibaut Courtois is set for a lengthy spell on the sidelines after sustaining a serious knee injury.

The Belgium international is believed to have suffered the anterior cruciate ligament injury to his left knee in training and will undergo surgery in the coming days.

A statement on Real’s official club website saidd: “Following tests carried out on Thibaut Courtois, the player has been diagnosed with a torn anterior cruciate ligament in his left knee. 

"The player will undergo surgery in the coming days.”

Courtois, 31, has made over 200 appearances for the club since joining from Chelsea in August 2018 and has been a near ever-present in the Spanish capital.

Courtois produced a man-of-the-match performance in the 2022 Champions League final when Los Blancos beat Liverpool 1-0 in Paris.

Spain international David De Gea, who was previously linked with a big-money move to the Bernabeu, could be an option for Carlo Ancelotti’s side after his contract at Manchester United expired earlier this summer.