Was a good player at one point, but injuries have taken their toll. I see nothing wrong with bringing him back on and giving him a shot. If we got lucky and he was able to stay healthy, he'd be an instant upgrade at OLB. http://sports.espn.go.com/nfl/news/story?id=3903709 Low risk, high reward.
I'm not sure I'd be willing to give up $1.5 M or so for an already $$-strapped team for something that is about a 10% shot of working out. Old, injury prone and on the juice = not a good thing.
He signed a one-year contract last year if I'm not mistaken... wouldn't he have to be resigned to play next year?