the old toad said naruto will fight someone with power in his eyes whats more powerful than obito's eyes he has the rinnigon in 1 and shari in the other naruto will fight obito not sasuke and die saving everyone with the help of sasuke. PS naruto dies saving sasuke in final moment and with his last breath wins the battle against obito that's how sasuke will become hokage i mean come on you all see it coming i mean it's the most logical way.