A lot more than meets the eye, at first look at least.
While both are left-shooting wingers, the former is a part of Sabres history as part of the French Connection (alongside Gilbert Perreault and Rene Robert), and the latter has a chance to become future Sabres lore on a yet-to-be-named line (alongside Jack Eichel and Sam Reinhart), if Vesey chooses to sign with Buffalo that is.
Chris Ostrander (of Two in the Box fame) has produced this spectacular graphic which details the Rick Martin trade tree, and all the players that have come and gone through Buffalo since that time.