Browns owner Jimmy Haslam threw support behind Johnny Manziel on Wednesday, saying he "absolutely" believes Manziel can still be an NFL starter.
The Browns are expecting Johnny Manziel to be ready for training camp.
Johnny Manziel checked into a treatment facility last week.
Citing nearly 20 Browns sources, ESPN's Jeremy Fowler and Pat McManamon report Johnny Manziel exhibited a "year-long pattern" of lacking commitment and preparation to football and a "continued commitment to nightlife" during his rookie year.
Speaking Thursday, Browns owner Jimmy Haslam admitted the team has no idea whom its 2015 starting quarterback will be.
New Browns OC John DeFilippo stated Thursday Johnny Manziel will have a "clean slate," and DeFilippo is "looking forward" to working with him.
Browns GM Ray Farmer still believes Johnny Manziel could develop into a "solid starter," but "would not hesitate" to use a 2015 first-round pick on a quarterback.
At his season-ending press conference Monday, coach Mike Pettine conceded the Browns' quarterback situation is "muddy" and "very much a question mark."
Speaking Monday, Johnny Manziel vowed to stop being a "jackass."
Johnny Manziel (IR, hamstring) didn't show up on time for treatment on his injury Saturday and was fined.
Coach Mike Pettine said Johnny Manziel (IR, hamstring) will "have the chance to compete" for the starting job in 2015.
Browns placed QB Johnny Manziel (hamstring) on injured reserve, ending his season.
Johnny Manziel admits he has to take being a pro "a lot more seriously than maybe I did at (first)."
Johnny Manziel (hamstring) is done for the season, Browns coach Mike Pettine announced Monday.