David Geffen -- I'm Being Stalked by Ex-College Football Player

David Geffen says he's got a stalker ... and the alleged suspect happens to be a former college football player who was famously kicked off his team for kissing his boyfriend.

According to court docs obtained by TMZ ... Jamie Kuntz is being accused of following, harassing and making a "credible threat" against the Hollywood big wig sometime between September and November.

Kuntz was arrested in October and now faces a felony stalking charge ... as well as a misdemeanor for disobeying a court order to stay away from Geffen. He'll be in court this week to face the charges.

Back in 2012, Kuntz made headlines when he was kicked off the North Dakota State College of Science football team ... after he was seen kissing his bf in the press box.

Kuntz's lawyer David Wohl claims his client and Geffen had a physical relationship -- but Kuntz fell for the music and movie mogul, and when the feeling wasn't reciprocated ... Geffen got a restraining order.

The lawyer claims there was no stalking ... just a big misunderstanding.