Seeing that the "dangerous substance" was Xanex and not something like cocaine or marijuana I really don't see anything happening to him. The damaging the building is disturbing, but it turned out just to be a smoke alarm cover. Saban and the NFL aren't happy, but I highly doubt he gets suspended. He may receive some sort of fine, but I don't see anything else.
Eric Warfield got suspended four games last season for a DUI. HOWEVER, it was his third offense. This is Traylor's first, which is another reason I doubt he gets any time off.