Is it another case of a coach laying a bit too much praise on an upcoming opponent, or is it exactly what is in store for Barkley? It will be at least 2018 before anyone can know for certain. NFL draft rules require prospects to be three years removed from high school to be eligible. As a true sophomore, Barkley won't meet that standard until after next season, at which point he can apply for early eligibility in the 2018 draft if he so chooses.