 The 2017 season was Crichton's breakout year where he earned rave reviews in an otherwise disappointing South Sydney side.He finished the season with 22 appearances and 7 tries including a hat-trick against the Gold Coast Titans.On December 18 2017, after much speculation over his future Crichton signed a 3-year deal to join South Sydney's arch rivals the Sydney Roosters on a three-year deal starting in The 2019 season.