Apparently, Atlanta GM Rich McKay was watching the Tampa game this past Sunday:
Personally, I think DeAngelo Hall is garbage. Never liked him. Never thought he was anything all that great. Lots of talk. Lots of noise. Gets burned a lot by quality receivers. He also cost his team a win a few weeks ago after attacked a ref during the game. I have a real hard time imagining Polian bringing in a guy like Hall.
Still, it looks like it was McKay that reached out to Polian. McKay was once Tony Dungy's GM in Tampa Bay. If I hear more on this rumor, I'll update.