Hodson, 22, scored 170 points for the Dons to help them on their way to the title, despite missing a chunk of the season with a broken thumb.
Rovers Head Coach Daryl Powell said “Tom is a quality outside back with real pace and great footwork. He can play Full Back, Wing and Stand Off so he has versatility that is a valuable asset. I look forward to seeing Tom in a Rovers shirt next season.”
Hodson previously came through the ranks at Wakefield, and also had a spell playing rugby union.
He said: “I’m really looking forward to taking up my contract with rovers for the 2013 season. I’ve long been an admirer of how professional the club has been run in recent times and I had no hesitation in signing when the opportunity came and believe the development of my game will benefit greatly under Daryl and Ryan.”