Anderson is dealing with a high ankle sprain, Patrick Finley of the Chicago Sun-Times reports.
It isn't certain when Anderson suffered the injury, or when he'll be back in action.
Anderson was signed by the Bears on Wednesday.
Anderson appeared in three games with the Bears earlier this season before being released, but he'll return to the team with plans for him to provide depth at inside linebacker and on special teams.
Anderson was waived by the Bears on Tuesday, Brad Biggs of the Chicago Tribune reports.
The Bears cut ties with the 24-year-old linebacker after he saw a season-high 39 snaps in Sunday's loss to the Cowboys. Anderson recorded four tackles in three games with the Bears, playing mostly on special teams. He now has a chance to be picked up by another team looking to add linebacker depth.
Anderson was not listed on Wednesday's injury report.
Anderson was recovering from a shoulder injury in late August, but his absence from the injury report shows he should be ready to go for Week 1 as a depth inside linebacker.
Anderson suffered a shoulder injury during Saturday's preseason loss to the Chiefs, Rich Campbell of the Chicago Tribune reports.
Signed by the Bears as an undrafted free agent in May of 2015, Anderson was a resident of the practice squad for the first five games before receiving a promotion to the active roster In Week 6. He earned three starts along the way, compiling 36 tackles (30 solo), two passes defended, and one interception, while logging 30 percent of the defensive snaps and 32 percent of the special teams snaps. Currently, the severity of Anderson's shoulder injury is unknown, but he serves as a depth inside linebacker when healthy.
|P3||8/27/17||@ TEN||1:00 pm|
|2||9/17/17||@ TB||1:00 pm|
|4||9/28/17||@ GB||8:25 pm|
|6||10/15/17||@ BAL||1:00 pm|
|8||10/29/17||@ NO||1:00 pm|
|Bye: Week 9|
|12||11/26/17||@ PHI||1:00 pm|
|14||12/10/17||@ CIN||1:00 pm|
|15||12/16/17||@ DET||4:30 pm|
|17||12/31/17||@ MIN||1:00 pm|