Back in early August we reported there was no exact time frame for Cohen's return, but HC Matt Nagy suggested it would more like weeks vs. days. Turns out it will be several more weeks. Montgomery and Williams should handle a bulk of the work with Cohen out.
CHI RB Damien Williams - Week 2 Fantasy Football Outlook
Week 2 vs. Cincinnati Bengals
Damien Williams had a solid role in his first game with the Bears. He played on 43% of the offensive snaps and was involved as both a runner and receiver. Williams finished with six carries for 12 yards and 4-28 on five targets. It'll be interesting to see how the Bears utilize Williams once Tarik Cohen returns, but as for now, he'll have a decent role in this offense. He'll have some low-end RB3 appeal in PPR formats in a favorable matchup against the Bengals. Cincinnati allowed 11 receptions to RBs in Week 1, which was third-most in the league.