​Castleford Tigers have signed Leigh Leopards prop Robbie Mulhern on a three-year deal to start in the 2027 season.The 31-year-old, who has represented England and Ireland at international level, started his career with Leeds Rhinos.AdvertisementAdvertisementAdvertisementHe has made 94 appearances for the Leopards since joining from Warrington in 2022.”We’re thrilled to secure Robbie’s signature. He’s one of the elite front rowers in our game, and this is a huge signing for our club,” head coach Ryan Carr told the club website.