I think Naruto and Sauke WILL have a final clash--not one out of hatred like Madara and Hashirama, but one to end the cycle of hatred. Maybe even end the series with them charging at each other right at the beginning of the fight.
Sasuke does not have the testicular fortitude to attack Konoha knowing Naruto will meet him in combat. He has flat out said, as if actions were enough, he sees him as an equal and humanity's last hope. Does that sound like someone you would want to attack?