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 fouled Kasper Dolberg in the 89th minute with Real leading 2-1, meaning he is suspended for the second leg.Uefa opened an investigation into the Spaniard when, after the match, he told reporters he would "be lying if I said I didn't force [the booking]".The case will be dealt with on 28 February.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."By picking up a suspension at this stage Ramos reduces the risk of missing a potentially more important match later in the competition, as all bookings are wiped following the quarter-final stage.However, a player who is found to have obtained a booking deliberately can be banned for two games.When asked if he knew the foul was likely to lead to a yellow card and a ban, Ramos said: "Yes, but I had no choice."