I reckon brothers itachi and sasuke together will make kabuto end edo tensei and then kill him, this is how i think it will happen:
STEP1- AS WE KNOW IZANAMI IS NOW ACTIVATED
STEP2- ITACHI GETS SASUKE TO USE A GENJUTSU ON KABUTO,A USEFUL GENJUTSU HE COULD USE IS THE SUSANO'OS GENJUTSU SASUKE...