This is not a "Let's sign these guys post." It's just a place to talk about it, because it does pique your interest as a fan when quality players hit the market.

The Pats cut Adalius Thomas

The Jags cut John Henderson

The Bucs cut Chris Hovan

These are all defensive linemen, and Buffalo appears to have solid depth there now... post-draft. But, John Henderson ?is/was? an elite DT in the league. Obviously his play waned if the Jags went as far as to draft 2 new DTs and cut him. I didn't watch him, in particular, all that much last season... so I really couldn't tell you if he's washed up. 

Adalius Thomas somehow got in the Pats' doghouse. Again, I'm not really sure if he's washed up, either. 

Chris Hovan was a nice player for the Bucs recently, but is not an answer to.. anything really.

I would put a great deal of doubt on Buffalo making a move on any of them... but c'mon... it's John Henderson.