So, if Marner had been willing to sign a fair contract at 8 or 9 per last off season I don't see too much of a problem -- he could probably do that now.
If what he really wants is every last dollar then that's not a problem either. He should just take the highest offer he can get from a team with a less talented roster that can afford the cap space to give him. That worked pretty nicely for Bozak and there's no reason it couldn't work out for Marner too.
I just don't think its feasible to have it both ways. He can have his record-breaking contract or he can play for the Leafs, but I really doubt that he can have both.
If he signed with the Leafs tomorrow and had a season-ending injury on the first day of camp, life would go on anyway. No one would throw in the towel or lose hope of success. Theres no such thing as the indispensable man, and if Marners contract demands aren't viable for the Leafs, so be it.
It would then be time to move on.
Of course, I have no idea of what's been offered or asked of either side as I don't chat with Leafs management or Marners camp, and I don't have friends of friends who do. And, frankly, I couldn't care less if Marner wants to play for the Leafs or not. My only hope is that he signs somewhere soon, and the Leafs get some compensation if he gets a better offer.