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On 28 July 2015 it was announced that Roy would become the assistant coach of Indian Super League side Atlético de Kolkata. Roy was made the head coach of the under-23 side. On 28 October 2016, after the suspension of Kolkata's head coach, José Francisco Molina, Roy was confirmed to take charge of the side for their match against NorthEast United. Despite going down 1–0, Atlético de Kolkata came back to win 2–1 and move to first place.