Castleford Tigers On 24 July 2023, the
Castleford Tigers announced the signing of Horne on a one-and-a-half-year deal, with an option for a further year. He made his
Super League debut for the Tigers on 4 August against
Huddersfield. His performance against
Wakefield Trinity in his second game for Castleford saw him voted Fans' Man of the Match and named in the Super League Team of the Week. Horne was assigned squad number 14 ahead of the
2024 season. He was voted Fans' Man of the Match in the round 1 defeat against the
Wigan Warriors, and scored his first Castleford try in round 2 against the
Salford Red Devils. In May, Horne signed a two-year contract extension with the Tigers. In round 18, he scored two tries and was voted Man of the Match in a win against
Catalans. At Castleford's end-of-season awards, Horne was named Players' Player of the Year.
Leigh Leopards On 24 October 2025, Horne signed for
Leigh Leopards in the
Super League having been released from Castleford. ==Representative==