Don't see their relationship preventing Haaland from going to City.
Don't think it will either, most likely.
Due to City already having interest and having his dad as part of his negotiating team and being able to keep Raiola on check.
Pep wouldn't even be the one negotiating with Raiola.
That said, the problem with Raiola isn't just about negotiation.
He thinks he is a star himself, he talks all the time and uses the media publicly and blatantly (not under the table like most agents will do)
He publicly insulted Pep before (over the years) and just in today's interview he came after SAF. Never mind the way he handled Pogba situation.
Do you want a player that will have his agents talks to the media this way and disturbs the team?
The answer is probably yes, only because Halaand is simply worth it. If it was another player Pep won't bother.