The Broncos addressed their injury-riddled defensive secondary on Wednesday by signing 13th-year pro Tyrone Poole.
Fourth-year cornerback Christian Morton was released.
The Panthers drafted Poole in the first round in 1995. He played for Carolina until 1997 and then played for Indianapolis, Denver, New England and Oakland. He was cut by Houston last summer.
Poole has 18 career interceptions, 121 pass breakups, nine forced fumbles and five fumble recoveries in 142 games, including 112 starts.
In his one season in Denver, Poole played in 16 games, starting four times, with 51 tackles, 10 pass breakups and a forced fumble.
Broncos cornerback Champ Bailey is out with an injured hamstring and safety Hamza Abdullah is out with an injured groin.