The Bills are preparing for preseason game No. 3 Friday night at Detroit against the Lions on 100.1 The Hero. The third preseason game is typically a dress-rehearsal for the regular season. Bills Coach Sean McDermott says offensive lineman Garrett McGhin, who suffered an ankle injury during the Friday night win over the Panthers, is not practicing. Center Mitch Morse and offensive lineman Conor McDermott remain in the league’s concussion protocol program. Center Russell Bodine remains sidelined with an oblique injury. And tight ends Jason Croom and Dawson Knox, who are nursing hamstring injuries, have returned to practice.