Living in Chicago, I've watched this kid play a little. He is entering his 5th year, and is only 26 years old. He didn't play much outside of special teams his first two years. In his third year, he saw most of his snaps as the backup weakside end in Marinelli's 4-3 and racked up a respectable 7 sacks. Unfortunately, due to injuries in the interior line of the Bears, he had to play defensive tackle most of last year. At 270lbs, I don't think this is his optimal position, and probably contributed to their terrible run defense. I think he makes a lot of sense as a cheap, young backup end with upside. I don't see anyone else in FA that matches this profile.