Jimmy Garoppolo, Raiders backup QB, suspended for two games by NFL for drug policy violation.
Raiders expected to release Garoppolo before $11.25m roster bonus kicks in.
Garoppolo used prescribed medication without valid NFL exemption.
Garoppolo replaced by rookie Aidan O’Connell, future with Raiders uncertain.
Signed three-year, $72.75m contract with Raiders last offseason.
Garoppolo threw seven touchdowns and nine interceptions this season.
Raiders face quarterback decisions, O’Connell may retain starting role or team could explore options in free agency, trade, or draft.