The Rangers released Sustr from his professional tryout agreement Monday, Mollie Walker of the New York Post reports.
Sustr had four points in 16 regular-season appearances with HC Dynamo Pardubice of the Czech Extraliga before finishing the year with Tappara of Finland's Liiga, where he posted one goal and 11 assists in 38 regular-season outings. If he doesn't receive another opportunity in North America, he could return to Europe for the 2025-26 campaign.