Per ESPN it's safety J.R. Reed:

http://www.espn.com/college-sports/story/_/id/23873069/college-football-most-underrated-player-top-25-team

Pretty good pick, but it's hard to argue against D. Walker. With Carter and Smith getting all the hype in the LB core, people didn't even know his name. But he finished second on the team with sacks and TFL, so that says something about his ability, considering everyone playing in front of him. I expect him and Rice and Beal and maybe Cox, to come on strong....by midseason, we'll be saying, 'Lorenzo who?' lol