The Real Madrid star has just celebrated a Champions League and La Liga double but sources have told IBTimes UK that he wants to move somewhere else during the summer transfer window after being left "outraged" by allegations that he has knowingly failed to pay up to £13m in taxes to the Spanish authorities.
And Perez says he will talk to the four-time Ballon d'Or victor on his return.
Asked about potential clubs Ronaldo could join, Perez said: "I'm not contemplating Ronaldo leaving".
The 70-year-old Perez, who ran unopposed, was reelected for a fifth four-year mandate at the Spanish powerhouse.
Mourinho, though, is said not to want to make a move for the Portugal captain because of his rocky relationship with him during his time as manager at Madrid and Ronaldo's supposed declining form. I hope so. It would be very bad business to sell him.
"I'm sure that Cristiano meets all his tax requirements, it must be a confusion that will be cleared up".More news: Bodies found on 'ripped' USA destroyer
"What they have told me is that he has the same financial arrangements as he had in England, where he had no problems".
The prolific striker scored twice to fire Real to a 4-1 win over Juventus in the Champions League final earlier this month but his future at the club was thrown into doubt last week when Portuguese newspaper A Bola reported that he wanted to leave Spain after being accused of committing tax fraud. Cristiano, like the rest, has a contract, they are players of Madrid.
Ronaldo is now in Russian Federation representing Portugal at the Confederations Cup.
Calderon was at Real when the club bought Ronaldo from the Red Devils in a then-world record £80m deal in 2009.
The France international's sudden superstardom has seen his name linked to Europe's biggest clubs, with reports Real Madrid lead the line for his services should he leave the principality.