I see it ending like the Gaara fight with Kimimaro just barely beating Naruto after a tough battle and acknowledging that Naruto was tougher than he thought.

That's a good way to show Naruto's strength but to still have him lose.

I don't think Naruto can beat him with willpower after all Kimimaro is practically a dead man walking by pure will alone.

I'd like to see Kimimaro stay at least for a few chapters after the fight and Naruto's due for a loss to someone that's not leauges ahead of him.