Real Madrid want Kane to sign from Tottenham when the transfer window reopens in June.
The England international has been in stunning form this season, scoring 33 goals from 34 games to further enhance his reputation as one of the best players in world football.
Real Madrid are set to overhaul their squad regardless of whether or not they win the Champions League for the third consecutive season.
Diario Gol say Kane is keen to make the move to La Liga and has requested Ronaldo’s number to ensure their relationship gets off on the right foot.
Much was made of Ronaldo’s ego when Gareth Bale joined from Tottenham five years ago.
The Wales star accepted playing second fiddle to the forward and, as a result, their relationship has largely been positive.
Kane may have to bow to Ronaldo’s demands if he joins him at the Bernabeu.
But Diario Gol say Real have flatly refused to give their talisman’s number out to the Tottenham star.
It is supposedly because of uncertainty surrounding the 33-year-old’s long-term future.
Ronaldo wants a new contract but club president Florentino Perez is unwilling to dance to his tune.
And he may even be sold at the end of the current campaign.
Manchester United have been tipped to bring him back to Old Trafford but Express Sport understands that ship has sailed.
Chelsea are also supposedly keen with Roman Abramovich a huge admirer.
PSG are the third club being repeatedly linked but they may need to balance the books following the signings of Neymar and Kylian Mbappe last year.