Real Madrid goalkeeper Thibaut Courtois suffered a fresh injury setback Tuesday, injuring his right knee in training.

The Belgian, who has been sidelined since August after rupturing the cruciate ligament in his left knee, had been touted to return to action in the final weeks of the season.

"Following tests carried out today, our player Thibaut Courtois has been diagnosed with a ruptured internal meniscus in his right knee," Madrid said in a statement.

Courtois is now unlikely to play for Madrid in the rest of the current campaign, while he had already ruled out featuring for Belgium at the European Championships in the summer.

Ukrainian Andriy Lunin has won coach Carlo Ancelotti's trust as Madrid's goalkeeper in recent months, ahead of Kepa Arrizabalaga, on loan from Chelsea.

La Liga leaders Madrid face Champions League winners Manchester City in the quarter-finals of this season's competition.