Former 49ers linebacker Reuben Foster, whom Washington claimed off waivers Tuesday, was placed on the Commissioner Exempt list, the league announced.
An NFL spokesman told NBC Sports Bay Area that the league "will continue to review the matter."
The 49ers waived Foster on Monday, two days after he was arrested at the team hotel in Tampa, Fla., following an alleged domestic dispute with on-again-off-again girlfriend Elissa Ennis, who had previously accused him of domestic violence after a February incident at a Los Gatos house they shared.
Washington claimed Foster off waivers, but he'll be ineligible to play for an indefinite period of time, according to league's policy on personal conduct.