The Chicago Bears had the worst wide receiving corps out of any team in the NFL in 2017. On any other roster in the NFL, many of the guys who started such as Dontrelle Inman, Kendall Wright, and Josh Bellamy would be slot receivers or depth pieces.
Essentially, this had a ripple effect on the Bears whole offense. With a lack of receiving options around him, Mitchell Trubisky was limited in what he could do. While some of the blame does go onto the former coaching staff, injuries to Cameron Meredith and Zach Miller were entirely out of the coaching staffs control.