Wow! Clutch is definetly broke, I just hope the end of the crankshaft that the clutch attaches to is not broke, that would be expensive, hopefully the clutch just came loose, but I would consider that rare because those are left hand threaded and typically don't come loose, but hey anything is possible with these saws. The spocket and drum might be salvageable but definetely need new drum bearing, washer and e-clip. Good luck with repairs
Mark