Masalitin admits he expected Vlasic to have left the Hammers in January.
He told Championat: “To be honest, it's a difficult situation for the possible return of Vlasic, because there are many countries that take their players from Russia.
"Does it make sense for him to come to play, so that he would be taken away later? When he left, I always said that there was nothing to do with such a mood in England. He starts dividing games: I want to play there, I don't want to play there.
"If you play here, go ahead, then you will not play anywhere with such an attitude to football. He went there completely unprepared. Here is the result. I thought that he would be removed from West Ham in the winter, but he delayed for another six months."