Falcons' defensive back Brian Williams, who has made a huge impact since arriving after Jacksonville waived him on Sept. 5, did not practice on Friday because of an issue with his eye.
Williams was listed on Friday's injury report as questionable for Sunday's game with the Bears.
"Brian had an eye. It should not be an issue. He did not practice today," Head Coach Mike Smith said.
In four games, Williams has a 53-yard fumble recovery, a blocked punt and an interception. He starts at left cornerback but also plays the nickelback in passing situations.
Also listed as questionable was fullback Ovie Mughelli, who did not practice all week with a calf injury.
Wide receiver Marty Booker (abdomen) showed up on the injury report for the first time this week on Friday. He is listed as probable, as is kicker Jason Elam (hamstring). Reserve safety Antoine Harris (knee), a special teams specialist, is out.
The Bears listed two players as doubtful, linebacker Hunter Hillenmeyer (rib), who did not practice all week, and running back Adrian Peterson (knee), the brother of Falcons' linebacker Mike Peterson. Starting defensive tackle Tommie Harris (knee) fully participated in practice on Friday for Chicago.