Amid swirling reports that Ronaldo wants to leave Real Madrid and return to Manchester United, comes a fresh report from Spain's Marca that Mourinho is not in favor of a big-money move to sign the reigning Ballon d'Or victor.
In three years with Real Madrid, Mourinho won La Liga (2012) and the Spanish Cup (2011).
A statement issued by the section for economic crimes of Madrid's provincial state prosecutor's office said its investigations indicated that Mourinho committed tax fraud in 2011 and 2012.
The prosecutor also alleged that the player falsely reported income as coming from real estate, which it said had greatly reduced his tax rate.
The frenzy of speculation began soon after Ronaldo was accused last week of a 14.7 million euro tax evasion through offshore companies. Ronaldo's agent Jorge Mendes says there is a €1bn buy-out clause in his contract.More news: UK, EU's historic Brexit talks commence
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Real Madrid have no intention of selling Cristiano Ronaldo to Manchester United or any other club this summer, according to Kaveh Solhekol.
"Ronaldo is a Real player and will continue to be so as far as we are concerned", Perez told Spanish sports daily Marca yesterday.
"No offer has been received for him".
Ronaldo is now on duty for Portugal at the Confederations Cup in Russian Federation which ends on July 2.
The Sun also reports that United are anxious he is just using them to get Madrid to give him a new and improved contract. I learned of the [reports] through what a newspaper said.
'I have complete confidence that he is innocent, he has always wanted to fulfil his fiscal commitments, ' Perez said. The Portuguese-born star is set to give evidence in his case on 31 July.
There are many similarities with Leo Messi's recent tax fraud case in which the Barcelona star avoided a prison term but paid a hefty sum to the Spanish authorities.