He might have a Heisman Trophy on his mantle, but Johnny Manziel is going to make a TERRIBLE pro quarterback ... a la Tim Tebow ... so says ex-NFL stud Jamal Lewis.
Lewis is in a position to judge, he was a beast during his NFL career -- helping the Baltimore Ravens win the Super Bowl his rookie year, rushing for 2,066 yards in 2003 (3rd-most of all-time), and breaking the single game rushing record that season with 295 yards.
J.L. couldn't have been more clear -- Manziel will be a disaster in the pros.
Still, we gotta ask ...