Win the starting job opposite Ike Taylor and prove he's a solid long-term option to start in the NFL. Brown is in the mix for the starting job along with Cortez Allen and Keenan Lewis.
Brown has big-play ability and he was drafted because it was thought he could bring that ability to the Steelers, who lack a guy at corner who can make the splash plays.
Brown didn't get much of a chance to show his stuff in 2011. He's currently well behind Allen and Lewis in terms of reps and production. He was great on special teams last season, however, and that could help his cause. The biggest obstacle will be overcoming that tiny sample size.
I think Brown will get some snaps in the nickel and dime this year, but I think that he's going to have to earn his way onto the field more than some others. I think he has an outside shot at eventually unseating Allen in the nickel, but the starting job is likely to go to Lewis.