Real Madrid have confirmed Eden Hazard has sustained yet another muscle injury.
The Belgium star has damaged a rectus femoris muscle in his left leg, having reportedly failed to complete training on Thursday (AEDT).
It was hoped the problem was simply muscle fatigue, but tests have shown the former Chelsea forward has a more serious injury.
According to reports in Spain, Hazard could be out for up to six weeks, which would rule him out of the first leg of the UEFA Champions League last-16 tie with Atalanta on February 25 and perhaps make him a doubt for the return fixture on March 17.
It is the latest in a succession of injuries that have blighted Hazard's time in Madrid since his €100 million move from Chelsea in 2019.
The 30-year-old was out for nearly a month at the end of September and again from late November due to muscle issues. He was also unavailable for two weeks between the injuries due to a positive coronavirus test.
Hazard has only started 20 times in La Liga, six of those coming this season, and scored just three goals. He has failed to complete a full 90 minutes in any match this season across all competitions.
Madrid, who are third in La Liga and 10 points behind leaders Atletico Madrid after playing a game more, face Huesca away on Sunday (AEDT).