At first glance, everyone will rightfully point out the facts:
Lewis coming off win, Hardy coming off loss.
Lewis KO'd the guy who just beat Hardy.
Lewis is ranked much higher and has faced (and beaten) higher level guys than Hardy has ever fought.
Context matters, of course...
Lewis was clearly losing the fight with Volkov before pulling out the KO at the last second and he got stopped in his two previous fights...plus Hardy was allegedly dealing with an injured hand before the 1st round ended and, while he got picked apart on the feet, Volkov is much more technical than Lewis.
I could see this fight getting made, and I would certainly watch, but the fight seems to make a lot more sense for Hardy than it does for Lewis, at this point.