This assumes, however, that Ronaldo is still a Madrid player, with a source confirming that he wants to leave Madrid and Spain as a result of accusations from the Spanish tax authorities and the media.
Perez, a 70-year-old construction magnate said to be close to Ronaldo, was elected unopposed on Monday for a third term in charge of Europe's most successful club.
Portugal coach Santos, who guided the team to Euro 2016 glory a year ago, was asked whether Ronaldo's future had become an issue and if he believed he would still be a Real player next season.
Ronaldo who is under investigation for £13million tax evasion, is said to have been moved by Perez's impassioned defence of him, according to reports in Spain. Ronaldo and Mourinho are both clients of agent Jorge Mendes.
Mourinho, who has won 25 trophies with clubs in Portugal, Italy, Spain and England, managed Real from 2010 and 2013, winning the Spanish league and the Super Cup in 2012 and the Copa del Rey in 2011.
In three years with Real Madrid, Mourinho won La Liga (2012) and the Spanish Cup (2011).
Real Madrid President Florentino Perez leaped to the defense of Cristiano Ronaldo during an interview with a Spanish radio station yesterday and it seems that his comments have now made the striker think about the possibility of honoring his contract with the club. The hearing will take place at 09:00 GMT on July 31 in a court at Pozuelo de Alarcon, in the suburbs of Madrid, according to Spanish press reports.
Last Friday (16 June) it emerged that the four-time Ballon d'Or victor was "outraged" following allegations he knowingly failed to pay up to £13m ($16.6m) in taxes to the Spanish authorities.
Manchester United and Paris Saint-Germain have been mooted as his likely destination and there are suggestions that even Zinedine Zidane's attempts to convince Ronaldo failed.
Ronaldo is at the Confederations Cup in Russian Federation, playing for Portugal. "No offer has been received for him". Portuguese sports daily A Bola had also claimed that Perez had already been informed of the decision. "I have not spoken with him since [the Champions League final in] Cardiff".
Ronaldo's silence has only fuelled talk of a return to Old Trafford, where he became a fans' favourite having flourished under the guidance of Sir Alex Ferguson before joining Madrid in a world-record deal eight years ago.