Former Bears head coach Matt Eberflus will return to Chicago as defensive coordinator of the Dallas Cowboys on Sunday, and not everyone is glad to see his unit.

"Make no mistake about it, (Dallas) was one of the more challenging defenses we faced when I was in Detroit," first-year Bears head coach Ben Johnson said on Wednesday. "We struggled to run the ball at times. Really good red-zone defense. We've got to be on our stuff this week."

The Bears (0-2) prepare for the Cowboys knowing there are few details about Chicago quarterback Caleb Williams that Eberflus doesn't know. Johnson said the inside knowledge works both ways.

Eberflus is in his second stint with the Cowboys (1-1). He was a linebackers coach in Dallas before being hired as Colts defensive coordinator, which predated his hir

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