This would mean Trevathan will miss at least the first three games of the season before he could be activated from injured reserve.
Trevathan, 31, is a former sixth-round pick of the Broncos back in 2012. After four years in Denver, Trevathan signed a four-year, $24.5 million contract that includes $12 million guaranteed with the Bears.
Chicago brought him back last year on a three-year deal worth $21.75 million.
In 2020, Danny Trevathan appeared in all 16 games for the Bears and recorded 113 tackles, one sack, a forced fumble and five pass deflections.