Again. Pay attention in to manga that we are reading !
Everyone, even Kakashi and Sakura, take the same conclusion: Sasuke is lost and needs to die. Even though he was a victim of hate in the world shinobi, he has no more salvation and must die.
Everyone! Less Naruto.
And that's is it because Naruto is deeply in love with Sasuke? Of course not! That's is it because Naruto is the boy of the prophecy, that will bring peace to the world Shinobi, breaking the cycle of hatred, iada iada iada.
And there's only one way of him doing that. Bringing Sasuke back for the good side.
In the latest chapters, Kyuubi provoked hin: You could not even save his friend.
In another moment Naruto said, "How can I become Hokage if I can not even save a friend?"
Naruto also said, "How can I declare my love to Sakura if I can not even keep a promise?" (save the friend)
Naruto will never kill Sasuke.
Maybe he dies to redeem himself, or anything like that. But only after returning to the side of good.
Although I bet in a happy ending for the team7