The 22-year-old is contracted at Red Hill until 2022, but could make the code switch thereafter, which the star rookie revealed has always been a dream of his.
“Absolutely. I always wanted to be an All Black growing up, always been a union kid,” Isaako told reporters.
“Sometimes in the future if I get the opportunity to go back home and play rugby, I’d look to take that opportunity with both hands.
“I’m here at the Broncos for another four years, but beyond that I’m keeping my options open.
“Whether I re-sign again or I go home to play rugby, I’m not too sure … but playing rugby is still a possibility.”
The NRL’s leading points scorer added that he drew his inspiration from boyhood hero and All Blacks icon Dan Carter.
“I idolised Carter, me and my family would go and watch (Canterbury) Crusaders games,” Isaako said.
“I loved Carter’s goalkicking and he was the one guy I tried to copy with my kicking.
“Me and Jordan Kahu (Broncos utility) are proud Kiwis and we have mates in the All Blacks team.
“I have connections back home and they know I’m settled in league so they won’t approach me, but if I was to choose to go back to rugby, I have people I know who could get me back home.”