Igor Shestyorkin
Check out his stats, 1.11 GAA last year in the KHL
KHL is a weird beast though since the best team are so much better than the others. Magnus Hellberg (on the same team) put on 1.83 0.913 and he was at best a good AHL goalie. Koskinen who's been dissapointing for Edmonton was 1.57 0.937 in his last season there (for SKA again).
Shestyorkin is a good prospect though and the heir apparent to Lundqvist. I just hope for their sake they can keep Georgyev there as a 1b while Shestyorkin matures. They might have to trade one though since Lundqvist still has another year left.