Remember the fight with Pain where Naruto was held by one of Pain's minions? Sasuke is absorbing Kyubi's sage chakra. I dont think Sasuke will know how to control it. What do you think?
No, it clearly states you must be train to handle Sage chakra.Sharigan can't copy it nor Rinnegan absorb it. When Sasuke was using it before it was because of Jugo controlling it and Jugo is not their.