This isn't as rough as losing Vladimir Sobotka to the KHL, that's for sure. Former 2009 third round draft pick SergeyAndronov has agreed to return to CSKA Moscow. Andronov played for CSKA for three seasons before he played two years with the Blues' AHL affiliates in Peoria and Chicago.
Andronov had only 21 goals and 24 assists in 112 games in the AHL. While it is never something that you want to see, him un-defecting(?) to the KHL should be neither a shock nor a loss. From RSport (translation from Google Translate):
Hockey club CSKA trial concluded an agreement with striker Sergei Andronov , the agency "F-Sport", the press service of the army. Twenty-five Andronov in sezone-2013/2014 played for the club of the American Hockey League, "Chicago Wolves." In 53 matches, the striker scored 26 points (13 goals and 13 assists).
"Sergey Andronov is on view in CSKA, with the player signed a trial contract", - the press-service.
Andronov played for CSKA Moscow from 2010 to 2012, 109 matches counts forward 20 points (12 +8).
The English translation isn't the best, but you can get the gist. He didn't fall all over the Blues' qualifying offer at the end of June; this was an option that was probably the best for him. You can't begrudge someone going home and managing to benefit from a lack of NHLPA escrow and other beneficial tax situations.