"Johnny Manziel training camp Browns 2014" by Erik Daniel Drost - Flickr. Licensed under CC BY 2.0 via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:Johnny_Manziel_training_camp_Browns_2014.jpg#mediaviewer/File:Johnny_Manziel_training_camp_Browns_2014.jpg

“Johnny Manziel training camp Browns 2014” by Erik Daniel Drost – Flickr. Licensed under CC BY 2.0 via Wikimedia Commons – http://commons.wikimedia.org/wiki/File:Johnny_Manziel_training_camp_Browns_2014.jpg#mediaviewer/File:Johnny_Manziel_training_camp_Browns_2014.jpg

According to a report from the ESPN, sources inside Cleveland question Johnny Manziel’s maturity, preparation and work ethic, claiming he’s more committed to nightlife than to the NFL.

Speaking to ESPN, one player said Manziel’s is “100 percent joke.”

“As one player put it, Manziel throughout the entire 2014 season was a ’100 percent joke,’” ESPN.com’s Pat McManamon and Jeremy Fowler reported on Friday.

“But more than once, teammates corrected the play-call in the huddle, or headed to the line hoping things would work because the call was wrong,” McManamon and Fowler wrote. “Sometimes, the offense would get lined up wrong because Manziel forgot to read the whole play or got the verbiage wrong (saying ‘left’ instead of ‘right,’ for example).”

ESPN.com spoke with almost 20 Browns sources, and other league personnel sources for a damning story on the hard-partying quarterback. The same story kept cropping up, that Johnny Football wasn’t ready and prepared when he got his first start against in-state rival Cincinnati, and that his lifestyle clearly hurt his play.

Manziel was not present the morning before the season finale. Team security drove to Manziel’s downtown home to check on him. The Browns were packing up for the season finale at Baltimore on Dec. 28.

Two team sources said security found a player who they felt clearly had partied hard the night before. One source used the words “drunk off his a–.”

The ESPN article addded, “one Browns staffer said he believed Manziel didn’t get tough love when attention to detail wasn’t there,” s

The Browns selected Manziel with the No. 22 pick in the 2014 NFL Draft out of Texas A&M. He threw 35 passes for 175 yards for zero touchdowns and two interceptions during his rookie season.