Auckland Nines organisers have called for the event to be moved to Australia, laying the blame at the feet of the NZ Warriors.
The event's contract to stay in Auckland is not due to expire until next year, but the NRL is understood to be keen on it to be moved to Brisbane.
Melbourne has also been touted as a home for the pre-season tournament, with the Victorian government already lodging interest to lure it south for 2019.
While official 2017 attendances were not released by Duco Events, they said about 22,000 people attended Eden Park on both days.
Duco Events director Dean Lonergan pointed the finger squarely at the Warriors, saying their poor performance to miss the NRL top eight in 2016 and lacklustre Nines squad dented the crowd size.