What if, as reported by many, he simply just chose to hold off on negotiating until he saw how the season went? Quite clearly, he hasn't been happy here with the criticism and scrutiny and pressure and losing - what if he simply evaluated all of that, and decided to wait and see if things would be different for him, and the team, through the playoffs?
He's going to be hated here for the way the entire tenure played out, but I have zero issues with how he's handled the final year of his contract. Nor should anyone else. It was a contract year, and he chose to staple himself to the greatest scorer currently in the game, and try to ride that to a big payday.
How different would the conversation be, today, if Marner signed the $13.5m x 8 offer earlier in the year, and they still flamed out in the playoffs? He gets some credit, from me anyway, for being the only one throughout this entire process who stopped and thought "they this might not work out".