Adewale Ogunleye and Alex Brown were the bookends at defensive end for the Bears defense from 2005-2009. They were damn good at their jobs, too. While not as quick or as good as Dwight Freeney and Robert Mathis, Ogunleye and Brown were consistent at pressuring the QB and disrupting running lanes.
Recently, after the Bears (stupidly) shelled out a ton of money for the (over-rated and lazy) former defensive end for the Panthers (Julius Peppers), Ogunleye was let go and Brown was placed on the trading block.
With Raheem Brock now released, and with Freeney hitting 30, the reality is the Colts do not have enough depth at defensive end to have a Super Bowl-caliber defense. Drafting someone is, of course, nice. But, I'm not interested in seeing the Colts developing someone who can rush the passer two or three years from now. They need a skilled defensive end right now.
At present, Brown offers more ability Ogunleye recovering from a broken leg, Ogunleye is the local favorite since he played his college ball at Indiana University. Also, when healthy, Ogunleye has proven to be more consistent than Brown. With a chance to get a ring and to play on a defense with Freeney, Mathis, Brackett, and Sanders, the Colts would have to be a very attractive target for Ogunleye. Also, consider he has spent much of his career in Chicago, and Indianapolis is only three hours drive from there.
Trading for Brown is a slight possibility, but unlikely. Still, he offers more right now than any defensive end I can see in the later rounds of the draft.
Getting someone like Ogunleye or Brown would do a lot to ease the pass rushing burden off Freeney and Mathis. It is simply not sustainable to continue to lean so heavily on those two guys to generate pressure.