The team filled Brown’s spot on the roster by signing free agent safety Cedric Thompson, a fifth-round pick of the Miami Dolphins who also spent time with New England.
The Bengals are thin at safety after starter George Iloka and backup Derron Smith left practice early Sunday, although neither injury is believed to be serious.
The team also activated Jarveon Williams from the Physically Unable to Perform list after the running back passed his physical.
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