What i think may happen (Spoilers, obviously) We've seen how Naruto resembles the sage of the six paths, especially because he's physically resembling more and more with each chapter and i think i know why. 

Solving the problem with the Juubi may need a crazy plan, and Naruto may be able to do it. His father was a master of space-time jutsu, and we saw him teleport using the space aspect, but never really the time aspect. This is where Naruto comes in.

The only way for Naruto to beat the juubi is to defeat it during a weaker state. Naruto obtains the Rinnegan in some way and figures out how to travel back in time, and we find out he has literally been the sage of the six paths all along. Thoughts?