Zinedine Zidane admitted he was worried about Eden Hazard's ankle injury suffered in Real Madrid's 2-2 draw with Paris Saint-Germain.
A Karim Benzema double looked to have sealed an impressive victory for the Blancos, but goals from Kylian Mbappe and Pablo Sarabia earned the visitors an unlikely draw late on.
Hazard was substituted in the second half at Santiago Bernabeu with a twisted ankle, after going down under a challenge from Belgian compatriot Thomas Meunier.
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Zidane, whose team are now guaranteed to finish second in Group A, is concerned about the injury blow.