Last I read was the Russian's plan to bring their two home in another capsule and Space X is gonna bring ours home on their next resupply mission.
I figured that SpaceX was going to do something like this, and not leave him there. Or he would be bouncing off the bulkheads in zero gravity. Not to mention what that would do to his health. Makes you wonder about going to to Mars.
Nine months there ,and back but it could be much longer. SCFI still shows ships, a space station ,with a centrifuge for artificial gravity.