Real Madrid will be without Casemiro for the second leg of their Champions League last-16 tie with Paris Saint-Germain due to suspension.
The Brazilian midfielder went into Tuesday night's first leg one booking away from a ban, and he picked up that caution in the 37th minute.
Casemiro arrived late to a challenge on Leandro Paredes, but looked as though he would avoid a yellow card until briefly putting his hand around Paredes's throat after the PSG midfielder had reacted angrily.
Los Blancos will now have to make do without the four-time Champions League winner when they welcome PSG back to the Bernabeu on March 9.
The booking came with the score still goalless in the star-studded first leg at the Parc des Princes.
Kylian Mbappe, who has been heavily linked with a move to Real Madrid this summer, enjoyed the best chance of the first half but he was thwarted by Thibaut Courtois.
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