Sergio Ramos has been charged by UEFA with "receiving a yellow card on purpose" in Real Madrid's Champions League last-16 first leg with Ajax.
Ramos admitted he would "be lying if I said I didn't force [the booking]."
Ramos later clarified his post-match comments, saying: "I was referring to forcing the foul, a foul that was inevitable. Not to forcing the booking.
"It was a very dangerous counter-attack in the 88th minute, with an open match and the tie as well."
He added: "That's why I said that I would lie if I said I did not know that I was carrying a penalty, just as I knew that I had no other choice than to make a mistake. And that's what I meant when I said that in football you have to make complicated decisions."
Ramos could receive a two-match ban.