Bears vs. 49ers — What to Watch For

Thomas Brown (chatting with quarterback Caleb Williams at Soldier Field) will be in the spotlight in his first game as the Bears’ interim head coach. Brown replaced Matt Eberflus, who was fired on Nov. 29. Ashlee Rezin/Sun-Times

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WHEN THE BEARS HAVE THE BALL

The firing of Matt Eberflus isn’t expected to change much on offense. Brown himself will be making the biggest adjustment — calling plays from the sideline as the head coach instead of the coach’s box as the offensive coordinator.

Though this game looked daunting initially, the 49ers’ defense, while fifth in the NFL in yards allowed, is 24th in points allowed — down from third last season. Linebacker Dre Greenlaw (Achilles)…