Brad Beckworth, a friend and adviser to the hard-partying former Heisman Trophy winner from Texas A&M, made the announcement Monday morning that Manziel went into rehab on Wednesday.
"Johnny knows there are areas he needs to improve on to help him be a better family member, friend and teammate, so he decided to take this step in his life during the offseason," Beckworth said in a statement released by the Browns. "On behalf of Johnny and his family, we’re asking for privacy until he rejoins the team in Cleveland.”
Since the Browns drafted Manziel in the first round, he's frequently been captured on social media partying at night clubs across the country.
Manziel was suspended for the Browns' regular-season finale against the Ravens when he skipped treatment for his injured hamstring, an injury that landed him on injured reserve. While Manziel was in Baltimore after being punished by the Browns, he visited Horseshoe Casino, sources told The Baltimore Sun.
Manziel played in five games this past season and struggled mightily. He completed 18 of 35 passes for 175 yards, no touchdowns and two interceptions for a 42.0 quarterback rating.
The Browns have hired former NFL quarterback Kevin O'Connell as quarterbacks coach. O'Connell worked with Manziel prior to the NFL draft last year, so it would appear that the Browns are determined to see if they can make it work with Manziel.
Browns general manager Ray Farmer said the team is in favor of Manziel's decision to seek treatment.
"We respect Johnny's initiative in this decision and will fully support him throughout this process," Farmer said in a statement. "Our players' health and well-being will always be of the utmost importance to the Cleveland Browns. We continually strive to create a supportive environment and provide the appropriate resources, with our foremost focus being on the individual and not just the football player. Johnny's privacy will be respected by us during this very important period and we hope that others will do the same."