Would the Sabres deal for Callahan?

A big domino fell over the weekend, with Ryan Miller being dealt to the St. Louis Blues along with Steve Ott in exchange for Jaroslav Halak, Chris Stewart and a pair of draft picks. Prior to being dealt to Buffalo, Stewart was mentioned as a piece in a potential trade that would bring New York Rangers captain Ryan Callahan to St. Louis, and now that he's in Buffalo, one wonders if he'll be used as a trade chip to bring Callahan to western New York.