If you do a google news search for Zach Bogosian, you'll find the references. Nothing substantial and it will all likely amount to nothing, but suppose the rumors were accurate enough that Atlanta is entertaining offers. Clearly, Bogosian fits the profile of exactly what the Avs need to add to their defensive corps. Size, physicality, speed, decent shot, young, and NHL ready.
The Avs have pieces that could perk the ears of Atlanta. Chris Stewart. Joey Hishon. Their upcoming 1st round pick. It's unlikely they'd outbid other offers if they weren't willing to part with a prized piece like this. I'd stop short of adding Stastny to that list, since Bogosian isn't quite a sure thing yet, but for the other pieces mentioned I think he'd be worth the risk.