I think this makes a little bit of sense. Probably something Terry is mulling over. The plan was to have Kim take over for the next 20 years while Terry entered an older age, but that doesn’t seem like it will be possible with her health. The Bills will have a value boost with a new stadium. He could sell in 5 years or so and make a tidy profit. He could even leave the Sabres to his children to run, which will be a much more reasonable tax bill.
I doubt a new owner will want to pay a billion dollar penalty just to move the team. These people are rich, but a billion dollars is still a lot of money even to someone like Bezos.