Board Thread:Naruto Discussions/@comment-24826628-20141021205610/@comment-26302001-20141021235958

Neji was the Hyuga clans version of Itachi Pre-Anbu, a gifted genius prodigy, and his byakugan according to Hiashi was stronger than any other members in the clan. Neji had tremendous potential, but Kishi wasted it killing him off instead of killing off somebody useless(Tenten). If he was a transmigrant I would not doubt it, but there is no proof of any sort so its just speculation as of now.