White announced the signing Tuesday morning via Twitter, and a person with knowledge of the situation confirmed the move.
Drafted in the seventh round out of Florida State by Washington in 2011, White appeared in two games as a rookie. He did well in the preseason, but still ranked behind veterans Orakpo, Rob Jackson and Chris Wilson.
The Redskins released a White before the start of the season and he signed with the Tampa Bay Buccaneers’ practice squad.
Wilson and Jackson are competing for the starting right outside linebacker spot previously held by Orakpo, who suffered a season ending injury on Sunday. Orakpo will have surgery to repair a torn pectoral muscle and is expected to require four month recovery time.