5 things to watch for as the Chicago Bears play the Pittsburgh Steelers on ‘Monday Night Football,’ including David Montgomery’s potential return — plus our Week 9 predictions

“He’s a game changer,” Nagy said. “He’s special now. He’s all over the place. He’s smart. He can beat you with different moves, speed to power, can bull rush you. He’ll be all over the place, different spots on the D-line. And he goes after the football. When he tackles, he tackles the football. When you’re in the pocket, you better have ball security because he’s going after that football.”