just some possible matchups:
Like Phixion mentioned Asuma(C) vs. Shikamaru
Kakashi vs. Itachi (C)
Chio (C) vs. Sakura
Zabusa (C) vs. Mifune
Lee vs. Kimimaro (C)
but who the hell is gonna take on Hanzo and the former Kages???
I dont think so, since Jiraya needs the toads for his most powerful Jutsu, but they are definitely on Narutos Side / the Sannin will be left out since Oro stays within KabutoYea with all the zombies popping up jirayas almost certain to pop up again.