It would be shocking to me if Bey or Kin returned next season. I'm following recruiting under the assumption that next season will need to replace them along with Siewert and Gatling.
I'd be suprised if Kin is gone. 6' PGs generally don't get drafted high after leaving early. It happens so rarely. The list in my head right now over the last 20 years is like Chris Paul and Ty Lawson. A recent example is Tyler Ulis. Consensus all-American after his sophomore year at Kentucky, was drafted 34th, and is now in the G league.