I doubt they know the ruling but they probably at least have some sense of the vibes surrounding it internally since I'm sure they've been in lockstep with their counsel. Its fascinating that it would be easy to read this as going either direction - either really good for them or really bad and they are getting ahead of it by locking down their future for the road back to the PL/heavy points deductions/transfer bans.
Re: Haaland if the wages reported are correct (500k per week), he's certainly not getting that really anywhere other than Saudi so if he's okay cashing in right now and then fighting back to the PL in a year or two, I get it. He certainly seems like the type of character that would prioritize making as much as he can, especially since he's won everything with City already.