Louis last played for the Dolphins after being signed during the offseason before being released.
Louis spent the previous four seasons with the Bears, playing in 41 games and making 28 starts at guard.
Louis, 28, is a 6-foot-3, 320-pounder from San Diego State.
Follow me on Twitter @RavensInsider
Aaron Wilson covers the Ravens for The Baltimore Sun.
This story originally appeared on Nationalfootballpost.com
- Sports & Recreation
- American Football
- Indianapolis Colts
- Chicago Bears
- Miami Dolphins