Kishi will probably forgot about him.
Well...
As my only favorite still alive, I really hope Kishi don't just forget about him... Lol
But in my happy little idea of his future, I honestly see Naruto pardoning him (he pardoned Sasuke after all) and him going back to his orphamage and being "Father Kabuto"
You must be registered for see images
probably back at the orphanage protecting the kids from uncle pedo oro. if oros evil i could see kabuto dying to stop him