Quarterback Matt McGloin said Thursday that he signed a three-year contract with the Raiders.
McGloin and his agent broke the news via Twitter. The Raiders have not confirmed the transaction.
McGloin played collegiately at Penn State, where he departed as the school's all-time leader in touchdown passes. He also set several single-season records during his tenure at Penn State.
The Raiders enter this season without a proven quarterback to replace traded veteran Carson Palmer.
Matt Flynn is the presumptive starter, though he has started only two games in his five NFL seasons. Third-year quarterback Terrelle Pryor started one game his first two seasons.
The Raiders also used a fourth-round draft pick on Tyler Wilson in the NFL draft last month and signed undrafted free agent Kyle Padron.
McGloin went undrafted last month, but he received plenty of attention from teams interested in a backup quarterback. He worked out for the Washington Redskins and Carolina Panthers before he signed with the Raiders.