It's looking uncertain for Week 3. Tyson Bagent sustained a concussion during Week 2 action (the same game Caleb Williams hurt his hamstring), and he's currently in the NFL's concussion protocol (from the Tyson Bagent page). He may not clear protocol in time for Sunday's game against Philadelphia — and if he doesn't, Case Keenum would likely get the start.
The Fantasy Headliners summed it up: "He is in concussion protocol. He may not clear in time. So we could be looking at Case Keenum getting the start" — .
So short answer: doubtful at best. The Bears' QB room is in rough shape this week.