Johnny Manziel -- Rehab Was Great ... I'm a Changed Man

Johnny Manziel (Man Zell) says he learned a "tremendous" amount about himself during his stint in rehab -- and says he's ready to prove he's a changed man. The Cleveland Browns QB just issued a statement ... in which he apologizes for letting down the Browns organization and his fans. He said, " I would like to thank my family, friends, the Browns organization, my teammates, and Browns fans everywhere, for your patience, understanding, and support."
He also says he takes "full responsibility" for his actions -- and though he doesn't get into specifics, he's clearly referring to his highly publicized alcohol fueled benders last season.
He concludes by saying he wants to focus on football -- and wants to be "the best possible player, teammate, and man that he can be."