UEFA on Friday announced that it had charged Manchester City manager Manuel Pellegrini for his verbal attack on the referee after his side's 2-0 Champions League loss to Barcelona.
European football's governing body said Pellegrini had been charged with "violation of the general principles of conduct" set down in UEFA regulations, and that his case would be beard on February 28.
The Manchester City manager was incensed by referee Jonas Eriksson's performance in Tuesday's last 16 first-leg match at the Etihad Stadium, which saw Lionel Messi open the scoring from the penalty spot after Martin Demichelis had been sent off for fouling him.
Pellegrini disagreed with the decision, arguing that the foul had started outside the penalty area and that City midfielder Jesus Navas had been impeded by Serio Busquets in the build-up to the incident.
He also accused Eriksson of being "not impartial" and even suggested that he should not have been put in charge of the game because he came from Sweden.
However, addressing the media on Friday, the Chilean admitted that he had spoken out of turn.
"When you lose a game the way we lost against Barcelona, you are frustrated, you are angry," Pellegrini told a press conference. "Maybe I said some things I didn't mean, so I apologise for what I said."
He added: "Also, I want to clarify what I said. I didn't make any serious accusations to anyone; not to the referee, not to UEFA, not to anyone.
"I said the referee decided the match because he didn't give us a foul against Jesus Navas and then to the penalty, we had a player sent off in that moment. The referee decided the game.
"It's a difficult profession. He had a bad day, and I didn't say that he was a bad referee."
