Manziel was named the starter for the rest of the season on Nov. 17, but the Browns reversed their decision after video surfaced of Manziel partying during the bye week. Manziel was demoted to third string after he lied to the Browns about the incident.
The report does not state what conditions Manziel must meet in order to start. The former Heisman Trophy winner entered a treatment facility earlier this year.
Manziel, who turned 23 Sunday, has played in six games this season, completing 59.4% of his passes with five touchdowns and two interceptions.