Johnny Manziel isn't the only former NFL quarterback headed to The Spring League.
According to Pro Football Talk, Zach Mettenberger will be joining the developmental league and scouting event.
Mettenberger was drafted by the Tennessee Titans in the sixth round of the 2014 draft and spent three years in the league between the Titans, San Diego Chargers and Pittsburgh Steelers. He last appeared in a regular-season game in 2015.
He was released by the Steelers in May 2017, seemingly putting an end to his time in the league.