The 26 year-old hooker or loose forward, who made his 200th appearance for his hometown club in the recent game against Hull KR, says he was tempted by a move to the NRL but will now be with the Tigers until at least the end of the 2021 season.
“I’m really pleased to have signed my new deal here with the Tigers,” said Milner, who was out of contract this season. “There has been a lot of negotiating this year and I’m so happy to be here for the next three years.
“It’s tempting when NRL clubs come in declaring their interest. Australia is sort of the big-city lights.
“I sat down with my agent at the end of last season and we thought there was an opportunity to fulfil a boyhood dream of mine and go challenge myself in the NRL.
“But Cas have been good and have been very patient with me and I’m really happy I have signed and got my future sorted here.”
Castleford director of rugby Jon Wells said: “Castleford Tigers are thrilled to be able to announce the retention of Adam Milner.
“He is rightly thought of as one of the best talents in Super League and we have made it an absolute priority this season to make sure he is with us for next season and beyond.
“It is rare these days in Super League for a club to be able to keep their top talent from the lure of the NRL and yet that is precisely what we have done in securing Adam’s signature on a new long-term contract.
“I think it sends a clear and bold statement about our ambitions as a club and I am delighted that Adam will now move into the best years of his career as a Castleford Tiger.”