Perez defended Real's push to secure Lopetegui before the World Cup and said the Spanish Football Federation did not need to sack him on Wednesday.
"You can't turn back time but we're convinced that what we've done is honest and clear".
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Both Perez and the former manager of the Spanish national team made it clear that they do not understand the decision of the federation chief, which chose to remove Lopetegui as head of La Roja just days before the World Cup began, in response to the Basque's upcoming move to Los Blancos. But a day later, Spain chief Luis Rubiales reacted to what he saw as a betrayal by immediately firing the coach just two days before Spain's opening game.
"It was an absurd reaction of misunderstanding and pride, which was aimed at hurting the prestige of Real Madrid", said Perez. While his own personal footballing philosophy may be different from Lopetegui's, which is a function of the managers he's worked with over the years both as a player and as a sporting director, you tend to believe him when he says that things "won't change much" for Spain.
"We wanted to do this event after the World Cup, after another win by the national team", Perez said.
"I am very relaxed, all of us are, we have acted in a fully professional and honest way". Some people want to be more popular but I won't waste time or name them.
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"We have a very clear goal in mind, we've worked for two solid weeks before the competition".
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"I feel sorry for the manager because he was with the [Spain] team for the last two years and of course he deserves to be with the team".
"Yesterday was the saddest day of my life, since the death of my mother, but this is the happiest day", he said.
"We can not alter two years of hard work in the coming days - from now until the Portugal match, we don't have the ability to change much".
Germany kick off their World Cup title defence on Sunday when they face Mexico in Moscow, while Spain face European champions Portugal on Friday.
"It's not a huge problem for them because the players are so good that they pick themselves". "I would like to finish this press conference with a smile because it feels like we are at a funeral and tomorrow the World Cup starts".