Prokhorov was the Islanders' 2025 2nd round pick (42nd overall) and has signed a three-year, entry-level contract with New York. The 18-year-old Russian winger improved his draft stock in 2024-25 after a solid 20-goal, 27-point campaign with MHK Dynamo St. Petersburg (MHL) across 43 games played. He is expected to remain in Russia with Dynamo Moskva (KHL) on loan for the upcoming 2025-26 season.