The 49ers promoted Jordan from the practice squad to the active roster Wednesday.
Jordan is signing with the 49ers, Nick Wagoner of ESPN.com reports.
Jordan was reinstated from his suspension Tuesday, freelance NFL writer Howard Balzer reports.
Jordan has been signed by the Raiders.
Jordan was suspended for 10 games for a violation of the NFL's PED policy, Tom Pelissero of NFL.com reports.
Jordan recorded 22 tackles, 1.5 sacks and a pass breakup in 2018.
Jordan (knee) was a full participant at practice Tuesday, John Boyle of the Seahawks' official site reports.
Coach Pete Carroll said Monday that Jordan (knee) will be a game-time decision for Saturday's game against the Cowboys, Brady Henderson of ESPN.com reports.
Jordan (knee) is inactive for Sunday's game against the Cardinals.
Jordan (knee) is listed as questionable for Sunday's game against the Cardinals, Bob Condotta of The Seattle Times reports.