So the 4th Hokage's intent to seal the Yang side of the kyuubi is for Naruto to someday learn how to control the kyuubi's chakra and somehow merge himself with the rest of the bijuus using "that jutsu." But if Naruto needs a sharingan to pull the juubi's body from the moon, either Kakashi or Sasuke will have to give an eye to Naruto. Which one will it be?