PHILADELPHIA -- The conversation about marijuana's place in the NFL is heating up.

Earlier this week, it was revealed that the NFL Players Association is working on a proposal that would amend the current drug policy to take a "less punitive" approach to recreational marijuana use among players, and the union's recently formed pain-management committee is studying whether the use of medical marijuana should be permissible.

NFL commissioner Roger Goodell and NFLPA executive director DeMaurice Smith have discussed a potential change in the drug policy, which Goodell predicts will be part of the upcoming collective bargaining process.

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Tim McManus ~ ESPN.com ~