Bills and NFL teams in general are going for $5 Bill and up based on the Broncos/Commanders sales the past few years. Wash in at $6 billion.
So, it does make sense for Pegula family to sell some of the Bills. As long as they have controlling interest in the football ops, they can sell most of the club, ala Mark Davis and the Raiders. He's down to like under 25% or something after selling to Brady and 2 Private Equity firms.
As for the Sabres, well, that's another matter. Ideally, he'd sell them to someone else. Not too familiar with the Sabres arena. Is the location ideal? If so, is it large enough to make any necessary renovations to accommodate the new revenue streams arenas have these days? I'm more of the mindset that as long as the arena has the space, it's better to renovate if it was built in the 1990's or later. STL, Bos had major 9 figure renovations. PHI too, but now they appear to want to build a new one with the Sixers.