Campbell played his college football in College Park, Md. at the University of Maryland.
Campbell is a former Oakland Raiders fourth-round draft pick. He has played in 19 career games with no starts.
Campbell was acquired by the Carolina Panthers in 2012 in a trade from the Raiders in exchange for running back Mike Goodson. Campbell was waived-injured last year by Carolina and played in no games last season.
Campbell is an athletic 6-foot-6, 320-pounder who had a notable NFL scouting combine after playing for the Terrapins where he ran the 40-yard dash in 4.75 seconds and bench pressed 225 pounds 34 times.
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Aaron Wilson covers the Ravens for The Baltimore Sun