Broncos hooker Andrew McCullough has departed the club effective immediately to sign with the Newcastle Knights for the rest of the season.

The 30-year has made 260 NRL appearances for the Brisbane but was relegated to the bench this year.

He was Queensland's State of Origin starting starting No. 9 just 18 months ago and gets a fresh start at Newcastle.

Knights coach Adam O'Brien said McCullough would help fill the void left by Jayden Brailey, who is out for the season with a ruptured ACL.

โ€œWe are in a position thanks to good governance from Alex McKinnon to have a top 30 spot available to secure someone of Andrew McCulloughโ€™s calibre,โ€ Oโ€™Brien told newcastleknights.com.au.

โ€œAs one of the leaders of the Club, itโ€™s my responsibility to be looking at recruitment and retention to have us field a competitive team each week.

โ€œWe are on foreign ground with the draw stating we have to play 18 game straight and we need to forward plan.

โ€œWe have faith in the depth of our roster but also recognise that promising talent Chris Randall is on the start of his journey having joined the team as a train and trial player late last year.

โ€œConnor Watson is another exceptional player who can fill the role at Nine but given his versatility itโ€™s important for the make-up of the team to keep him in his current explosive role.

Taking a holistic approach to the team, the recruitment of Andrew McCullough gives us valuable experience at the highest level.โ€

O'Brien said McCullough would bring valuable qualities to the side.

โ€œAndrew is a quality defensive player with a consistent passing game and kick threat,โ€ Oโ€™Brien said.

โ€œHeโ€™s a senior player with maturity which will only compliment Mitchell Pearce, Kurt Mann and Kalyn Ponga in the spine.

โ€œI am looking forward to having him join our roster ahead of the 2020 season resumption.โ€