Korbin Sims has been officially released by Newcastle and is expected to join the Brisbane Broncos.

It tops a horror week for the Knights club with veteran Jarrod Mullen testing positive for steroids and forward Pauli Pauli involved in a car accident.

“The Club carefully considered the request and following further discussions with Korbin and his management have decided to grant his release,” CEO Matt Gidley said.

“We thank Korbin for his contribution to the Club and wish him and his family all the best for the future.”

The Club has commenced and will continue recruitment discussions following the departure of Sims.

“The Club is in a very strong position to enter the player market and improve our squad for 2017 and beyond.”