Troubled quarterback Johnny Manziel is facing a four-game suspension by the NFL for violating the league's substance abuse policy.
NFL Network's Ian Rappoport broke the news.
It is not clear which drug Manziel tested positive for, but it was not a performance-enhancing drug, according to NFL sources.
Since being cut from the Browns, Manziel has had multiple run-ins with the law, and has been seen partying more than preparing to be picked up by another NFL team.
The @NFL suspends QB Johnny Manziel 4 games for violating league policy on substances of abuse. Another blow to any chance at returning.
— Ian Rapoport (@RapSheet) June 30, 2016
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