Johnny Manziel expected to throw at San Diego's pro day

The former NFL quarterback is expected to serve as a backup to Hamilton Tiger-Cats starter Jeremiah Masoli for the entire upcoming season.

Johnny Manziel isn't giving up on his football career just yet.

The former Browns quarterback was seen on the field at the University of San Diego's pro day Thursday and is expected to throw to the receivers in front of several scouts.

Sports Illustrated's Bruce Feldman first reported the news, adding "this will be the first time NFL teams have had a chance to see the former first rounder throw since his days with the Browns."

SI also noted the Heisman Trophy winner has been training with his old quarterback coach, George Whitfield, in San Diego. The university didn't have a quarterback available to throw, so the coaches asked Manziel if he was willing to participate and he agreed.

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The 25-year-old's last game with the Browns was December 2015 before he we was released by the team in 2016 as a result of his off-field behavior, including a four-game suspension for violating the NFL's substance abuse policy.

Over the past few months, Manziel has been preparing for a comeback and was hopeful to make a deal with a CFL team. However, he remains unsigned.