Real Madrid captain Ramos got into the referee’s book for a late challenge on an opponent, which sees him suspended for the second leg.
The Spaniard then suggested to the press in a post-match interview that he got carded on purpose, implying he would rather miss the second leg than potentially go into the quarter-final stages having to play with caution.
“Yes, the truth is that seeing the result… it’s something I had in mind,” he said, according to the Metro.
“It is not to underestimate the opposition but sometimes you have to make tough decisions.”
Two years ago, in Europe, UEFA extended Dani Carvajal’s one-match ban to three games after he was adjudged to have picked up a yellow card intentionally.
Ramos could face a similar ban, though he did take to Twitter following his admission to backtrack on his statements.