Most likely it will be difficult to happen considering how much his father loves Man City, this is not about money, maybe Real Madrid can buy top players, but Real Madrid doesn't want to be careless about player transfers because Real Madrid is thinking about the balance of the club. If they waste money, financial problems will occur. At a club as big as Real Madrid, I think bringing in Mbappe is far more sufficient than having to bring in Haaland to satisfy Florentino Perez's ambition to chase all the titles.
Real Madrid has much better finances and it is possible that Haaland will be their target next season.
I don't really believe it's not about money, modern football is almost completely involved in money when it comes to player transfers and the prices are much more fantastic than expected. Real Madrid is a big club and it seems difficult for any player to refuse to join them.
Have you ever seen the Cristiano Ronaldo era where almost all the stars were there and the club's finances were still quite stable.
For me nothing is impossible and if Florentino Perez wants Haaland then I am sure he will play at Real Madrid.
It's just a matter of time and I'm pretty sure that next season Haaland will be a target for Real Madrid if his performance is still good.