He will now remain at the club until the end of the 2017 season.
“I am overjoyed to have agreed a new contract with the club,” the Australian told the Bulls’ official website.
“These are certainly exciting times and we are moving in the right direction.
“Hopefully we can spend the next two years in the Super League.
“We have a big job on our hands but we enjoyed a good win over Sheffield and it gives us confidence to build on.
“I am looking forward to the next couple of seasons and where it could potentially lead the club.
“The Bulls have been good to me and I have really enjoyed my self so far.”