There's been one guy that I know of before this that went straight to the D now G League, Latavious Williams. Jeremy Tyler, Mundiay, Brandon Jennings and some others have gone overseas.
There's options available for kids that don't want to go to college. Australia's pro league is now targeting US players with higher pay than the G league
http://www.espn.com/nba/story/_/id/2...ones-nba-draft