Board Thread:Naruto Discussions/@comment-26367861-20161025235033/@comment-3965545-20161026184828

You need both of the pair of eyes.. Obito didn't have his pair until he was already set to die. He might have had bits of Indra chakra left in him from having Madara's Rinnegan for a time but he did not have the time to awaken the Rinnegan.