Nebraska athletic director Tom Osborne announces his retirement as of Jan. 1, during a news conference in Lincoln, Neb., Wednesday, Sept. 26, 2012. The 75-year-old Osborne said "the perception" that you're getting old "can get in the way." He also said he didn't want to be a distraction. (AP Photo/Nati Harnik)

Photo by: Nati Harnik

Nebraska athletic director Tom Osborne announces his retirement as of Jan. 1, during a news conference in Lincoln, Neb., Wednesday, Sept. 26, 2012. The 75-year-old Osborne said "the perception" that you're getting old "can get in the way." He also said he didn't want to be a distraction. (AP Photo/Nati Harnik)