The centre said staying in Brisbane would be the easiest option as this stage with his young family, but did not go as far as Milford to say he was only considering the Broncos.
With his partner Jess Kent due to give birth to their second child next month, Kahu said he would keep all options open.
"I am doing everything for them right now," he told the Courier-Mail.
"I have to make sure I'm looking after them first and foremost. I have to see what the best offer is and make sure I'm doing the best for my family.
"I haven't spoken to my manager about anything yet but I will be open to anything. (But) it would be a lot easier if we stayed here."
Kahu is yet to speak to his manager about his contract negotiations. The Kiwi back, whose family lives in Wellington, was linked to a possible move to the Warriors last year but denied the rumours at the time.
However, now that he was off-contract, he did not rule out returning to his home country.
"I've always thought about going home," Kahu admitted.
"Auckland (Warriors' base) is pretty far from Wellington though and that's where both of our families are. I don't think it would help that much moving back to New Zealand.
"But I'm open to anything."
