Alarm bells are ringing at Real Madrid after Karim Benzema was forced to leave the "Royal" match against Celtic due to a knee injury in the Champions League.

Although the Frenchman tried to continue playing, but the injury forced him to leave.

And the French international went directly to the dressing room just 30 minutes after the start of the match, which worried the "Los Blancos" camp.

Before his injury, the striker was absent from the match and far from his level, while Vinicius was the most dangerous player in attack.

Benzema missed one chance in the 15th minute, but his left-footed shot failed to hit the goal.

Then came the disturbing moment for all Real Madrid fans, given the difficulty of determining when Benzema was injured.

And in a beautiful gesture from the Scottish team's supporters, Benzema left the stadium amid a warm greeting from the fans of the "Celtic Park" stadium.