Nebraska's Ameer Abdullah, training partner of Winston, says Heisman winner needs to grow up

Nebraska running back Ameer Abdullah (8) reacts after scoring a touchdown against Miami in the second half of an NCAA college football game in Lincoln, Neb., Saturday, Sept. 20, 2014. Abdullah ran for 229 yards to lead a punishing ground game, and No. 24 Nebraska celebrated the 20th anniversary of its 1994 national championship team with an emotional 41-31 victory over Miami. (AP Photo/Nati Harnik) (The Associated Press)

Florida State quarterback Jameis Winston, who has been suspended for the game, warms up before FSU's NCAA college football game against Clemson in Tallahassee, Fla., Saturday, Sept. 20, 2014. (AP Photo/Mark Wallheiser) (The Associated Press)

LINCOLN, Neb. – 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.