Commenting on the contract extension, Delaney said, "I am really happy with how things have gone for me since I came to Leeds. I am really settled here now so when I spoke to Gary Hetherington about a new contract it was a pretty easy decision for me. By the end of this contract, I will have been here six years and I did not think that would happen when I first signed but I love being at the club and want to be part of it going forward. I will be 30 at the end of this deal and if I enjoy the next four years as much as I have enjoyed the last two, it will be a special part of my life.
"When I first signed for Leeds we had just won three Grand Finals in a row and now I am pleased to have got a ring myself last year. We have got Manly in a fortnight in the World Club Challenge and that is massive for us. Manly are a top class side and we want to challenge ourselves against the best team in the NRL. I am looking forward to running out in front of a packed Headingley Carnegie crowd that night. The Leeds crowd are awesome and they really lift us. Playing on a Friday night in front of a massive crowd is the best feeling ever and I can't wait," added Delaney.
Head Coach Brian McDermott added, "Brett is still young enough for us to do lots of improvement with him. His default setting is lots of hard work and tackles and he has added other qualities to his natural game over the years that we can play on the back of. He has really bought into the Leeds culture which is rare these days for overseas players, who generally only come for short spells at clubs. He is a back rower who can play in the centres rather than a centre who can play in the back row and I am sure he will be a big part of our squad in the years ahead."