(Photo credit: Lon Horwedel-Imagn Images)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. The Bears (0-2) prepare for the Cowboys knowing there are few details about Chicago quarterback Caleb Williams that Eberflus doesn't know. When it comes to slowing down the Cowboys and quarterback Dak Prescott, Johnson and the Bears might have major cause for concern. We have a high standard for Dak and the way he's supposed to perform,' Cowboys coach Brian Schottenheimer said. The Minnesota Vikings and Detroit Lions tipped the Bears with an aggressive pass rush to keep Williams unsettled in the pocket.