It can certainly happen
I just don't think it will, unless one (or both) of those guys are more unhappy in Edmonton than I can ever imagine, for whatever reason that may be.
It's been debated that the reason for Parise bouncing is he was butt hurt that Kovy got the big contract before he did. And the other arguments were the Suter factor, as well as the going home thing. I don't think there's anyone McDavid is currently mad about getting a deal before him, other than Drai, who is up before him, but it's not like he just walked in the door. He's been there longer than McDavid.
Is there potentially another player that McDavid (or Drai) really want to play with, who won't go to Edmonton? Do we think McDavid may want to go to Toronto to play?
It could happen, but the argument I see for it happening is often that it will be because Edmonton is a joke franchise, which they really aren't anymore, as they've been very competitive on the ice finally. Yes, they're a joke for the people they hire to run the team, like Stan Bowman (and Nicholson and Holland, though for different reasons), but they're no longer a joke on the ice and I think they can win there, as long as both stay together.
This will probably cause a Kovy debate (I don't think we've had enough of these this summer lol), but I do wonder if he would have left if Zach didn't? And I also wonder if he the lockout and escrow really did piss him off, like he mentioned and other speculated?
And I still think there was some under the table thing with the sale of the team. I still think Lou had to have told him ''If you wanna leave or think you might wanna leave, then leave now. Let's get you off of the books here by the time the sale is complete. And not in a year or two when the recapture hit will be that much more''. But that's for a different topic.