I don't want him to return to Konoha. The village has committed countless atrocities agaibnst his clan and topped it off with their heinous slaughter. He deserves a better life, away from the taint of Hidden Leaf. But if Sakura and Sasuke are to make a pair, she'll try and stop him, and this time, he'll stay.That is not to say that I won't vomit if it does happen.
Personally, Sasuke belongs in his own village. Hidden Sound still exists - regardless of being a nomadic-esque village. He can create definite one. Kabuto and Orochimaru always respected him in their own way, and Orochimaru's affection for him has only grown. I am sure Karin will become a nice mate for Sasuke. Being a pure blood Uzumaki, Sasuke has much higher chances of restarting both lines, rather than reaching a dead-end with Sakura.
I hope Kishimoto doesn't drop the ball with this one. But I have no good expectations from this guy.