Manziel enters treatment

Manziel was selected by the Browns with the 22nd overall pick in the 2014 NFL Draft. Bob Donnan-USA TODAY Sports

Cleveland Browns quarterback Johnny Manziel voluntarily entered a treatment facility last Wednesday to deal with undisclosed personal issues, according to

Manziel, 22, had a disappointing rookie season while often drawing criticism for his actions off the field. He has frequently been photographed drinking at clubs, and a picture surfaced over the summer that appeared to show Manziel rolling up a dollar bill in the bathroom of a nightclub.

He spent most of his rookie season as the backup quarterback behind veteran Brian Hoyer, but Manziel finally got his chance to start in Week 15 against the Cincinnati Bengals — a game the Browns lost 30-0.

Manziel then suffered a hamstring injury in Week 16 against the Carolina Panthers, rendering him unable to play in Week 17 against the Baltimore Ravens. He failed to show up for injury treatment the morning before the game against the Ravens, which led to a fine from the team. It was widely rumored that Manziel missed the practice due to a late night of partying Friday, and team sources have subsequently suggested the same thing.

Manziel will likely spend at least a couple of weeks in rehab, but he is expected to be ready for the Browns’ offseason activities.