The Chiefs waived linebacker Dezman Moses and signed linebacker Devan Walker.
Moses, who was in his third NFL season, had five tackles in 13 games last season for the Chiefs.
Walker, who played collegiately at Southeastern Louisiana, was with the San Diego Chargers during training camp last year before being waived in August.
According to David Canter, the agent of veteran safety Steve Gregory, Gregory will be retiring.
Here's the statement from Canter's twitter account.