Dunbar was the team's second-leading tackler last year and coach Jeff Fisher had said there might be a chance of re-signing him.
The Rams (1-3) began preparations Tuesday for Sunday's home game against the Jaguars after players had four days off following a loss to the 49ers.
Offensive tackle Max Starks was released to make room for Dunbar. The Rams also signed cornerback Darren Woodard to the practice squad and released fullback Eric Stevens.
AP NFL website: www.pro32.ap.org
- Sports & Recreation
- American Football