the right person to replace Benzema I think is Kane. how he plays up front will suit Madrid. but it all depends on how Madrid tries to get it. because it's a problem for Madrid to get Kane rumored to be expensive.
Madrid's current rival is Man United a strong competitor for Kane. but rather than spending money on Havertz, I think Kane with more money would still be good for Madrid.
I agree with you, buddy, that indeed the one suitable for Madrid to replace Benzema is Kane.
Even though the rumor is that the contract is quite expensive, it will be commensurate with the playing skills that Kane can provide to Madrid.
Yes, Madrid will compete with Man United for Kane because Man United themselves are eyeing several attacking players to strengthen the line of attack for their team.
But it looks like this will be a tough consideration for Kane because he has to choose one of the two teams and they have both become big and famous teams.