Ewing is a former Wisconsin standout who was picked in the fifth round in 2012.
He played in two games last season, starting at fullback before being placed on injured reserve on Sept. 16, 2013.
The 5-foot-11, 243-pounder missed his entire rookie season on injured reserve.
He caught two passes for 29 yards last season before getting injured.
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Aaron Wilson covers the Ravens for The Baltimore Sun