Real Madrid forward Kylian Mbappe has been diagnosed with an injury to his left thigh, making him a doubt for next week's FIFA Intercontinental Cup final.

Mbappe was replaced during the first half of Madrid's 3-2 win at Atalanta in the Champions League on Tuesday, having given his side the lead with a 10th-minute goal.

Madrid coach Carlo Ancelotti said afterwards that Mbappe had suffered ischial (lower pelvis) discomfort, adding that he did not believe it to be a serious injury but Los Blancos would need to wait for the player to be examined.

The club have since announced: "Following tests carried out on Kylian Mbappe today by the Real Madrid medical department, the player has been diagnosed with a thigh injury in his left leg. His progress will be monitored."

Mbappe, who also scored in last weekend's 3-0 win over Girona but has endured an inconsistent start to life at Madrid, looks set to miss Saturday's LaLiga game at Rayo Vallecano, and now faces a race to be fit for the Intercontinental Cup final in Qatar.

Madrid will face the winner of Saturday's tie between Pachuca and Al Ahly on December 18.