Since nobody is biting:
As a teenager from the Bahamas, Buddy Hield was initially subject to draft rules for "international" players, which would have made him automatically draft eligible for the 2014 draft, as he turned 22 during the calendar year of 2014. However, in 2012, when he was 19 years old and not yet automatically draft eligible as an "international" player, Buddy Hield enrolled at Oklahoma. By enrolling at Oklahoma, which is a U.S. university, his status changed from "international" to...well, there's not really a term for it so for lack of a better word "domestic". As a domestic player who is enrolled in college, he was not automatically draft eligible until either he dropped out of college (he didn't) or he used up his four years of NCAA eligibility. Thus there is nothing whatsoever shady about Buddy Hield's draft eligibility in 2016.
https://en.wikipedia.org/wiki/Eligibility_for_the_NBA_draft