He provoked a 90th-minute yellow card - his third of the competition - after Madrid took a 2-1 lead in the first leg in Amsterdam two weeks ago.
When the Real Madrid skipper got a yellow card towards the end of the first leg of the last 16 Champions League match against Ajax on 13 February, the 32-year-old admitted in his initial post match comments that it wasn't an unwelcome booking with his side leading 2-1.
Although he later retracted those words on social media that he had not deliberately earned a booking which would have left clear of cards for the quarterfinals if Madrid qualified, UEFA consider he has broken Article 15c of their disciplinary code.
Ramos was one yellow card away from a European suspension and Martin Keown, on co-commentary for BT Sport, noted that it looked deliberate from the Spaniard, who was clearly thinking about having his yellow cards wiped for the quarter final stage should Real get there.
But UEFA opened an investigation and gave him with an additional one-match ban for obtaining a booking deliberately.
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Kekalainen added: "I'm not going to get into any specifics or details, but it's not accurate that we haven't had an offer". They acquired Chris Wideman from Florida, and Erik Gudbranson in a deal that sent Tanner Pearson to Vancouver.
It means he will miss the second leg against Ajax and the first leg of the quarter-finals if the holders progress.
"It was a very risky counter-attack in the 88th minute with the match wide open 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".
"It is not to underestimate the opponent nor to think that the series is over, but in football you have to make tough decisions".