More troubling news for NFL player Damon Arnette ... the former 1st round draft pick was arrested Friday night in Las Vegas after he allegedly threatened a valet with a gun, TMZ Sports has learned.
The 25-year-old cornerback was busted for Assault with a Deadly Weapon, Carrying a concealed weapon and possession of a controlled substance after a dispute allegedly occurred at the Park MGM on Las Vegas Boulevard.
It's unclear what drug Arnette allegedly had on him.
A witness tells us Damon attempted to retrieve a car without a valet ticket .