Obviously "More than five". The Rinnegan wouldn't exactly be unique should there be more than a few players with the doujutsu, it's just be another boasting product. For Neji to formulate this and such would take pretty much forever to complete and establish, like how the Mokuton which was promised Once Upon A Time still hasn't been released, despite going over its final stages of production.
So really, there is no necessity for this ability to come into being, unless people wish to complicate everything in the near future. Do not try to negotiate, for it'll only lead to the description under by display image.