Board Thread:Wiki Discussions/@comment-24853432-20140423062926/@comment-24855268-20140423163248

ItachiWasAHero wrote: Kakashi will either gain back the same eye, Obito's other eye, or even the left Rinnegan of Madara. He hasn't lost it permanently people come on.

I agree with most of this but don't think Kakashi has the chakra to have the Rinnegan, the MS does a number on him. I do think we'll absolutely see both of Obito's original sharingan in the same person, most likely Kakashi if not both of them, though.

Minor plot hole here, the Rinnegan allows the user access to all jutsu so why does Madara need to take Kakashi's eye to enter the kamui dimension?