naruto may awake the sharingan because since kurama have the sharingan if the kurama use the sharingan and kill obito and madara at the same time so yeah that my opinion so far the best theory out there i think
That is no proof, its the Kyuubi's eye taking shape of a Sharingan since Obito Uchiha or Madara Uchiha was controlling him. In the picture you provided its, Obito Uchiha during the attack on the leaf by the Nine-tails and the Masked Man. Kurama does not have the Sharingan and Naruto will never be able to awaken the Sharingan since the Sharingan is a bloodline ability (Kekkai Genkai) to the Uchiha clan.