Johnson is listed on Carolina's official injury report as probable with a hip injury, according to a report by Vaughn McClure of the Chicago Tribune on Friday. The six-year veteran, who has recorded 3½ sacks this season, was limited in practice for the second straight day on Friday.
Other Panthers listed as probable for Sunday's contest, according to the report, include defensive tackle Dwan Edwards with a hand injury, tight end Ben Hartsock with a calf ailment, and cornerback Captain Munnerlyn, with a leg injury.
Elsewhere on Carolina's injury report, defensive end Thomas Keiser, nursing an elbow injury, is doubtful, while defensive end Antwan Applewhite has been ruled out with a thigh injury.
The Bears will try to stay undefeated at home this season when they host the Panthers at 12 p.m. CT at Solider Field on Sunday.