i don't think kyuubi is going to show up, cause naruto still has one shadow clone left, he just has to figure how to get out of pain's eyesight for a bit.
I was thinking and i realized some things that i wanted to share :
1-Naruto does not have anyone else to train him, unless one person that i think its the only one who will do it, yes it's killerbee!!
2- Think with me, killerbee after this will be informed that akatsuki captured all the previous hosts, and that they(the leader) tried to capture the nine-tails and failed too!! Killerbee will get very curious about this will want to know who is the last host, and that will be naruto last journey to evolution and brand new techniques followed by fully control of kyuubi and completely free of being catched in a genjutsu.
The point 2 must happen somehow cause come on follow my lead, naruto is very very strong, but lets face it he is fighting pain, destroyed 5 bodies, but again those bodies where not in their best condition (which i think naruto would have crushed them anyway at all but the point is still a fact), and this is pain, not the real one, so the real one is supposed to be more powerful than what we have seen!!
So this leads me to believe that even controlling the kyuubi is not enough!! Naruto has to do more than that, cause come on what about madara the one who just basicly sontrolled kyuubi like a pet, yes imagine it LIKE A PET!! do you all se what this means, the all freaking awsome monster of death kyuubi whos tails swings crushed mountains and villages, yes that kyuubi!!!
So yes there is still a long way to naruto, so its only natural that a sensei will teach him a sensei very very strong and a bit stupid like him, who better than killlerbee lool