Eden Hazard suffered an injury on Tuesday which could rule him out of his first Clasico against Barcelona on December 18.
The 28-year-old former Chelsea star, who arrived at Real Madrid in the pre-season, limped-off in the second half of the 2-2 Champions League draw with PSG following a collision with fellow Belgian Thomas Meunier.
Speaking after the match, coach Zinedine Zidane confirmed Hazard twisted his ankle.
“He was in pain at full time, and we think it is more than an impact injury,” Zidane said.
“It is a sprained ankle, but hopefully not a severe sprain. We will know more in the coming days.”
Meanwhile, both Madrid and PSG progressed to the Round of 16 with the latter guaranteed to finish Group A on top.