Anything Real Madrid can do, Barcelona can do better.
Cast your minds back to November and you may well recall the furore that accompanied the “deliberate” sendings off of Xabi Alonso and Sergio Ramos in Real Madrid’s Champions League win at Ajax.
But for what reason do they want the card?
It's their 5th yellow card this season, meaning they will get an automatic 1 match ban. (which happens every 5 yellow cards 5/10/15)
They deliberately took their 5th this match so they can miss the next match against Almeria without risking getting their 5th next match and end up missing the Clasico.
Well, that is called TIT-FOR-TAT.
Good tactical decision. Suppose they'll get a fine or something
Madrid did the same thing few months back