The accusations come just a week after Spanish prosecutors brought a parallel case against Mr. Ronaldo, Real Madrid's star striker who allegedly withheld taxes worth €14.8 million.
"I have not spoken with him".
"I'm a Man United fan, and my kids love him, so I hope that he'll be back".
He also confirmed that Ronaldo's contract was ring-fenced by a one billion euro release clause.
Free-spending Paris St-Germain has also been linked with a player that Perez insists there have been no bids for, nor he says has there been any offers for Alvaro Morata or James Rodriguez. "We don't want to disturb his concentration with the national team", said Perez.
"Jose Mourinho, who lived in Spain from June 2010 until May 2013, paid more than €26 million in taxes, with an average tax rate over 41 percent, and accepted the regularization proposals made by the Spanish tax authorities in 2015 regarding the years of 2011 and 2012 and entered into a settlement agreement regarding 2013".
He said that Ronaldo had clearly done nothing wrong and Perez was appalled that the "presumption of innocence is not respected" by the media who have branded the played a delinquent.
His first big challenge is keeping Ronaldo at the club he joined in 2009 from Manchester United for a record 94 million euros ($105.3 million). Lionel Messi and Javier Mascherano, among others, have already been convicted.
Prosecutors claim that the Portuguese manager - who took over at Manchester United previous year - failed to declare income of 1.6 million euros in 2011 and 1.7 million euros in 2012.
Ronaldo's future at Real Madrid looked guaranteed after lifting his third Champions League title with the club earlier this month, the Portugal global scoring twice in a 4-1 win over Juventus. The club - which also won La Liga last season - lead the way in the elite European competition with 12 trophies.