Chicago Bears running back David Montgomery has been declared out for Monday night's game against the Vikings, still dealing with the concussion he suffered in the second half of Sunday's loss to the Tennessee Titans. Montgomery has not been cleared to return to practice and will miss the first game of his career Monday.
The Bears also have declared quarterback Mitch Trubisky (shoulder), defensive lineman John Jenkins (ankle) and defensive back Sherrick McManis (finger) out. Offensive lineman Sam Mustipher is doubtful because of a knee injury. Allen Robinson (knee), Cole Kmet (groin), Jason Spriggs (knee) and Barkevious Mingo (knee) are questionable.
Robinson and Kmet were limited participants in practice Saturday at Halas Hall and likely will get the green light on Monday night.
Montgomery's absence, however, is another blow to a struggling offense. The Bears already have the league's least productive rushing attack, averaging 82.3 yards per game. Without Montgomery, more reshuffling must be done. And coach Matt Nagy said that could mean a committee approach in the backfield with former Viking Cordarrelle Patterson, Ryan Nall and Artavis Pierce potentially sharing the load.
• Bills cornerback Josh Norman tested positive for COVID-19 and will be one of four players and one assistant coach not traveling with the team for its game at the Cardinals on Sunday.
The team also ruled out tight end Tyler Kroft, cornerback Levi Wallace and safety Dean Marlowe by placing them on the reserve-COVID-19 list. Defensive assistant coach Leonard Johnson also will not travel with the team.
• The Packers activated linebacker Christian Kirksey from injured reserve and placed tight end/fullback John Lovett on IR.
Kirksey missed Green Bay's past five games because of a pectoral injury that he suffered during a 37-30 victory over the Saints on Sept. 27. He ranks fifth on the team with 27 tackles despite having played in less than half of the Packers' eight games.