Perez's last public statements on Ronaldo's future came at that tournament in Abu Dhabi, when he said he hoped the player did see out his career at the club, but recalled that a current deal signed just over 12 months ago still had three-and-a-half years to run.
The report claims Ronaldo has made it clear to club officials that he wants to leave the Santiago Bernabeu, but will not accept a move to a perceived "smaller league" such as China or MLS.
ESPNFC report suggested that a source close to the player had confirmed to them that news reports regarding Ronaldo's Old Trafford return are "accurate".
Is there a chance he leaves in the January transfer window? However, it's quite possible that this time, Ronaldo actually is ready to leave Madrid.
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French giants Paris Saint-Germain have also expressed interest in signing Ronaldo in the past, while a move to the Chinese Super League could still be on the cards.
The Portuguese forward is 33 in February, and while he may be the fittest 33-year-old footballer on the planet, Madrid can be forgiven for starting to plan for life after he leaves.
The 32-year-old forward admitted in December after scoring Real's victor in the Club World Cup final against Gremio that he "would like that [pay-rise] but it does not depend on me".
Manchester City manager Pep Guardiola has turned his attentions to young Real Madrid star Marco Asensio, according to Diario Gol.
But he is in the midst of his worst La Liga campaign since he arrived to the Bernabeu stadium in 2009, with his worst numbers since December 2005 when he only scored one goal for the Red Devils. "That is fundamental", former Real Madrid player Bernd Schuster commented while talking to Onda Cero.