Allen will not play in Thursday's preseason finale against the Steelers, Jay Skurski of The Buffalo News reports.
Bowry (foot) did not participate at the Bills' training-camp practice Monday, Alaina Getzenberg of ESPN.com reports.
Johnson (lower leg) didn't practice Monday, Ryan Miller of the Rochester Democrat and Chronicle reports.
Knox was among the Bills who didn't see action in Saturday's preseason game against the Browns.
Johnson rushed seven times for 25 yards and a touchdown and brought in one of two targets for 10 yards in the Chiefs' 16-15 preseason loss to the Buccaneers on Saturday. He also returned two kickoffs for 51 yards.
Nussmeier completed nine of 17 passes for 74 yards with no touchdowns or interceptions in the Chiefs' 16-15 preseason loss to the Buccaneers on Saturday.
Fields completed nine of 12 passes for 64 yards with no touchdowns or interceptions and rushed once for 15 yards in the Chiefs' 16-15 preseason loss to the Buccaneers on Saturday. He also committed a fumble recovered by Kansas City.
Allen secured three of five targets for seven yards in the Chiefs' 16-15 preseason loss to the Buccaneers on Saturday.
Walker rushed twice for four yards in the Chiefs' 16-15 preseason loss to the Bengals on Saturday.
Mahomes (knee) said during Saturday's preseason game at Tampa Bay that he's "extremely confident" he'll be available Week 1 against the Broncos on Monday, Sept. 14, Sam McDowell of The Kansas City Star reports.
