The Chicago Bears made some massive changes to the coaching staff and they filled one of their vacancies on Monday. According to Ian Rapoport, Chicago is hiring former Cincinnati Bengals' offensive coordinator Bill Lazor to the same position.

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The struggles of the Bears' offense in 2019 were well-documented as the team missed the playoffs. Due to the shortcomings of the offense, Matt Nagy chose to move on from Mark Helfrich as offensive coordinator after just two seasons with the organization.

After scouring the coaching market, the Bears chose to add Lazor to the staff. Lazor last coached with the Bengals in 2018 when he was Cincinnati's offensive coordinator for two seasons.

During his time with the Bengals, Cincinnati finished with the 26th-ranked offense in terms of yards and 17th offense in terms of points scored. Those numbers are slightly more impressive when you consider what he was working with in Cincinnati.

Before the Bengals, Lazor served as the offensive coordinator of the Miami Dolphins from 2014-15. His best season as a coordinator came in 2014 when the Dolphins had a top-14 offense in points scored and yards gained.

Of course, Nagy will have the ultimate say with the playcalling for the Bears in 2020. But adding Lazor into the mix gives Nagy someone to consult with on an offensive gameplan each and every week.

Above all, Lazor is likely being brought in due to his experience as a quarterbacks coach in the NFL. The Bears are hoping that the addition of Lazor to the staff can help Mitchell Trubisky reach his full potential next year.