Not one of them can understand that he isn't leaving because of money. He is leaving because they are sh1t and he wants to win stuff at a big club.
He'll be leaving for money too, and who can blame him?
Put it in a normal job context. You're on £20k a year. You've been told you should be on £50k, but your employer delays offering you that for a year. So you're losing out on 30 grand.
They then offer you the £50k, but by that point you've got other options on the table at a better employer and you'll be paid £60k.
Why the hell would you take the £50k offer, given you've lost £30k because of their position over the last 12 months too?