LINCOLN, Neb. (AP) — Nebraska running back and Heisman Trophy candidate Ameer Abdullah says 2013 winner Jameis Winston of Florida State needs to clean up his act.

Abdullah and Winston both grew up in the Birmingham, Alabama, area and trained together at the same gym. He said he considers Winston a friend.

Abdullah says Winston lacks maturity and needs to understand that how he presents himself has consequences.

Winston was suspended for last Saturday’s game against Clemson after several students said he stood on campus last week and shouted an obscene phrase that may have derived from an internet meme. Last April, Winston was caught leaving a supermarket without paying for crab legs and crawfish and was ordered to perform community service.