Everton manager David Moyes was critical of referee Pierluigi Collina after they crashed out of the Champions League against Villarreal.
The Italian official ruled out a late Duncan Ferguson header that could have sent the tie into extra-time.
Everton went on to lose 2-1, 4-2 on aggregate, but Moyes said: "He didn't do particularly well for us all night.
"I was told the referees would be the same in Europe as in England but I don't think that was the case."
Ferguson's late header would have given Everton a 2-1 lead - and extra time - after Mikel Arteta's brilliant free-kick levelled an earlier deflected strike from Juan Pablo Sorin.
Moyes said: "We thought we would get the second goal and we thought it was coming. I'm really pleased with the players - no problem about that.
"We are disappointed to be out of the Champions League, but we must not forget what an achievement it was to get there in the first place.
"We now have a go at the Uefa Cup, and we would have settled for that at the start of last season."
Everton captain David Weir added: "With the goal I don't think it was a foul - small things like that turn games and we did not get the rub of the green.
"We give 100% every game, if we continue to do that we will get the rub of the green.
"We will be a little bit angry about it but then we will think about the Fulham game at the weekend."
Everton goalkeeper Nigel Martyn said: "I thought we played exceptionally well. We had what looked like a perfectly good goal ruled out and must now concentrate on the Uefa Cup."
Villarreal's former Manchester United striker Diego Forlan admitted: "That disallowed goal was really helpful for us.
"We knew it would be a difficult game, but I didn't see what happened with the disallowed goal. Maybe it was pushing or something."