Buckner and Armstead will have new roles for 49ers

Daily 49ers blog for NBC Bay Area website: With a change to a 4-3 scheme, linemen Arik Armstead and DeForest Buckner may play more versatile roles. http://www.nbcbayarea.com/news/sports/New-Roles-for-Top-Picks-Buckner-and-Armstead--419392114.html