ESPN's Adam Schefter and John Clayton both say there is no imminent trade.
It would work well for the Packers, but it doesn't work well for the Bills. No trade. Hawk fits better in a 4-3 defense as a weakside linebacker. The Bills switched to a 3-4. Hawk would feel as uncomfortable in the Bills' scheme as he is in the Packers' scheme.
Schefter's analysis was on Twitter and re-posted to Rotoworld.
Regardless, I grabbed him anyway. Clayton says the deal could happen if the Bills lower their asking price.