Hmm honestly this is just a rumor. Mane is a good player, but Madrid hasn't shown interest in anyone for about 3 years, they just straight up buy whoever they want while the press just keeps throwing names around to sell papers.

How many times did Zidane come out to say "We are not looking for anyone" while the press asked for a different player every 5 minutes?

Also, next season Madrid should be getting Vinicious Jr from Brazil and they play the same position.