According to TSN.ca, Sergei Kostitsyn upon hearing of his demotion to the AHL, has refused to report. What's more is he has also requested to be traded. The Montreal Gazette further speculates of talk of him going to play in the KHL.
http://www.tsn.ca/nhl/story/?id=293177
http://www.tsn.ca/nhl/story/?id=293177