It is very true that Realmadrid would had been a very good destination for Haaland if he decides to leave Manchester City but theirs still a possibility that he would had as well ended up at PSG given that they're very financially capable of getting him into their team, we've seen in recent times that clubs that are financially strong easily attracts top players into their Club, PSG is not a small club and would offer him the opportunity in the Champions League as Realmadrid would also, moreover before the likes of Neymar and Messi moved over there they're several other top stars like  Ibrahimovic and Cavani that's succeeded in the club, I feel Messi and Neymar didn't leave up to expectations that's they had to leave and more Neymar's was due to his numerous injuries, I don't see PSG as a club that ruin players career, because over there a player is sure of winning the league trophy and standing out is based on a players individual performance and not the club's fault.