fail thread.
if you dont consider Last is being cannon (despite that its written by kishi and that its stated its a cannon movie)
Sasuke NEVER awakened the Rinnegan. "BUT THEN WHAT DOES HE HAVE IN HIS EYE?"
let's see. Awakening Rinnegan, one must require a Sharingan and Senju blood.
"but he has both!"
well, Kabuto says that he gave some Senju cells to Sasuke or similar to it. However, it wasn't the one that gave him a rinnegan (or else he should've had both rather than his left)
Now for the coup de grace, Sasuke only has one of RS's chakra.
His rinnegan can be deactivated by will to recharge it faster. It was hinted even in the gaiden when he told Naruto that he's been jumping around dimensions.
His rinnegan is pretty much the same thing as RS Obito giving Kakashi kamui sharingan.
So it's possible for him to lose the Rinnegan once he depleted ALL the chakra given to him like what happen to Kakashi's