He just doesn't want to be inconvenienced by it anymore. Professional athletes are the public equivalent of canaries. It's a nasty agreement on both sides, but it's one that isn't going to be changed and the canaries can either play by the rules or go back to hunting worms along with the crows and magpies. Bure wants to be on a team that will be competitive and has a good chance for the Stanley Cup. Bure has a horrible secret that will be revealed if he stays in Vancouver.
Bure wants cash.
If the real reason is one of the four mentioned above, then I want a refund. It doesn't matter if Burke is really trying to show Bure up, or if he's really still working for the NHL league office, or if he's spent every free moment calling Neil Smith and asking for the players he wants in return and thinks are a fair exchange for what he has to offer. It doesn't matter because no matter how Burke is handling the Bure mess, he's doing it at the expense of the rest of the team. In case you haven't noticed, the Canucks are a godawful club. They have almost as many defensemen playing forward as they do on the blueline, they have no other offensive forces other than recently concussed Mark Messier, a couple of weeks short of 38, who gets almost as much ice time as Chris Pronger.