Yeah, I can't imagine Buffalo is offering anything for Chychrun. Dahlin, Power, Samuelsson already stacks 3/4 of our top 4 with LHD.
And not for nothing, but Chychrun is more of a high-event type of defenseman who would need offensive opportunity to get value for whatever he's paid. They already have that covered - twice no less - with in-house players. It's not that he's an erasure out there (say, Brodin in Minny) or a 2-way force of nature (McAvoy) or some lesser version of that. He's bent toward scoring situations and they have that pretty solidly covered.