I *think* we lost his rights this summer by not signing him, but I'm not sure about that. montreal would probably know.
Rumour has it that the league is extending the rights retention on Russians for 1 more year, since they hadn't signed the transfer agreement, so going by that I guess we'd still have his rights for another year.
I'm not sure that it matters much, though. Even if he really steps up next year in the RSL, I doubt he'd be in a position to move directly to the NHL. And if he can't do that, I doubt he'd want to play for an AHL salary when he can make several times more than that staying in Russia. I really liked his poised and controlled games in the WJCs, he had a bit of a Markov feel, the way he could smoothly handle plays and still, subtly, cover things in his own end as well, despite his size and lack of aggression. I don't know much about how he has progressed in Russia, it is hard to judge from the stats, given that he has played on deep teams and maybe hasn't had much responsibility or icetime yet.
His progression has stalled, he missed a chunk of time last year and the year before he lost a bunch of time due to the NHL lockout since he played for the AK Rangers that signed all those NHLers, at one point he was even removed from the roster to make room for the nhlers.
I don't know and would bet we'll never know. I liked what I have seen from him, really liked him at the wjc's back when Perezhogin was on the team. I remember the great hit he had on Joni Pitkanen where he caused him to do a full flip, impressive considering the size disadvatage.
Korneev has signed with CSKA but I don't know the terms and length. Still I highly doubt we ever see him.