 CSKA threatened to withhold Filatov's transfer card, thus impeding his ability to play in another league, but Filatov, his lawyers and the Blue Jackets believed they had followed the necessary tenets of Russian law.Filatov's contract was one of six reviewed by the International Ice Hockey Federation (IIHF) in an attempt to mediate the disputes between the KHL and NHL.During this investigation, the players were unable to play international hockey sanctioned by the IIHF.