The Chicago Bears worked out former Baltimore Ravens safety Christian Thompson this week, according to a league source.

He wasn't immediately signed to a contract, though

Thompson tried out for the Oakland Raiders in December.

Thompson is a former Ravens fourth-round draft pick from South Carolina State.

He spent two seasons with the Ravens prior to being released earlier this year after serving a four-game suspension for violating the NFL substance-abuse policy.

He played in seven games as a rookie with the Ravens in 2012.

Thompson began his college career at Auburn before transferring. He was an all-conference selection at South Carolina State.

Follow me on Twitter: @RavensInsider

Aaron Wilson covers the Ravens for The Baltimore Sun.