NFL GM Believes '30 to 40 Percent' of 2015 Draft Class Smoke Marijuana Regularly

Although some states have legalized the use of marijuana, it is still against the National Football League's rules for players to smoke pot.

The threat of suspension and/or fines is enough to make some players think twice about using marijuana, but there are some who still choose to partake.

It seems like every year a big-time prospect is caught using, and this year is no different. Former Nebraska star Randy Gregory received a lot of criticism when he failed a drug test at the NFL combine, and former Missouri pass-rusher Shane Ray was recently cited for possession.

However, these two are supposedly far from the only ones who smoke pot regularly.

Here's what one NFL general manager told Bleacher Report's Mike Freeman about the use of marijuana in this year's draft class:

That general manager does believe that a change is coming to the league:

But for now, any player who fails a drug test may be subject to a suspension.