NFL Network had Urlacher slotted as the #6 linebacker FA available. He's not going to get big money from anyone at his age.
I think what's working against Urlacher even more than his age/health questions, is the fact that he has played his entire career in one defensive system -- and a system that has mostly fallen out of favor around the league at that. He is a Tampa-2 MLB, period. It is ludicrous to think he could plug in to some 3-4 scheme and be effective at ALL, and the GMs of those teams get that. Urlacher's skills (or what's left of them) are simply not a fit for a lot of teams and wouldn't have been even if he were a few years younger.
The only logical place I can even think of him being a fit would be Dallas and as Dallasbear has pointed out, they've already got a pretty good young MLB down there.