TUSCALOOSA, Ala. (AP) — The University of Alabama has told a local store to stop selling items signed by current athletes, which is a potential violation of NCAA rules.

University compliance director Mike Ward sent a letter to T-Town Menswear on Dec. 22 saying to “immediately cease and desist” selling, distributing or promoting items signed by or depicting current athletes.

The letter warned that otherwise it could “jeopardize the student-athlete’s eligibility.” The NCAA prohibits using the likeness or name of a current college athlete to promote a product or service.

The letter, obtained by The Associated Press Monday, was initially reported on outkickthecoverage.com, which also ran a picture of running back Trent Richardson in a store signing the back of a shirt bearing his name and number.

Ward was not immediately available for comment.