Kolosov will be demoted to AHL Lehigh Valley on Friday, Jackie Spiegel of The Philadelphia Inquirer reports.
Kolosov hasn't played an NHL game since Jan. 2, though he spent about a week in late January with the minor-league club. This move appears to be a more permanent arrangement, likely for the remainder of the season, and not just a paper move to make him eligible for the AHL playoffs. Samuel Ersson and Ivan Fedotov will be the Flyers' goaltending duo at the NHL level.