The Broncos have extended and upgraded the contract of the 18-year-old prop Payne Haas on a massive $3 million six-year deal.

Haas made his debut in a round-eight win over the Rabbitohs off the bench.

"We know the potential that is there so it is not a risk factor for us," Brisbane coach Wayne Bennett told NRL.com

"It gives Payne security and us security for six years to know that every year he won’t have some other club trying to knock him off the perch.

"It is important that we keep these boys because they are our future. Without young players coming through it minimises your future, particularly if you want to be a top team.

"I have always prided myself in my time at the Broncos with keeping the kids here. In our last premiership team there was 16 or 17 players who all came here as young men and never played for any other club, and we are nearly back towards that again now with predominantly homegrown young boys growing into men in the team."