Board Thread:Naruto Discussions/@comment-26977715-20150911142412/@comment-734582-20150918133841

RebornedMadara wrote: This manga page makes me believe that Madara used Izanagi... Izanagi needs to be activated beforehand. Madara didn't activate it beforehand. So he can't return to life. He used Izanagi with his original Eternal Mangekyo, but it was restored once it became a Rinnegan.

Technically, someone could use Rinne Tensei and return him to life again. But seeing how he had his "redemption" he's probably not coming back.