Johnny Manziel wants to be "the guy" for the Cleveland Browns next season and is prepared to have a more professional offseason.

"I have to take this a lot more seriously. It's a job for me now," Manziel said, vowing to spend more time in Cleveland this offseason than he did during last summer's bikini-filled, Gronk-inclusive, celebrity-fueled jaunt across America.

"I'm not the guy that I've always been," said the rookie. "I'm not the Johnny Manziel that came in here a year ago."