Free-agent offensive tackle Eugene Monroe is planning to retire, a source told ESPN's Josina Anderson.
Monroe was released by the Baltimore Ravens in June. An outspoken supporter of medical marijuana, he told The New York Times after his release that he wondered whether his advocacy contributed to his release.
The only active player to publicly support taking marijuana off the NFL's banned substances list, Monroe said in a statement last month that he had no plans to end his campaign.
"Despite the current uncertainties, one thing is for sure: whatever happens in terms of my professional football career, I will never stop pushing for the League to accept medical cannabis as a viable option for pain management," he said.