Ngati Wai has called a special hui over Hauturu or Little Barrier Island in the Hauraki Gulf.
The iwi is to consider formally resolving that is does not support the island's inclusion in the Crown's settlement package for the hapu, Ngati Manuhiri.
Ngati Wai says it should be negotiating and settling all rights to Hauturu.
The tribe has called a special general meeting of the Ngatiwai Trust Board in Whangarei at the end of the month.
Under the deal with the Crown, Hauturu-Little Barrier will be given back to Ngati Manuhiri for seven days before being returned to the Crown, to be run by the Department of Conservation.
A claims negotiator with Ngati Manuhiri, Laly Haddon, says it would be too expensive for Maori to run the island alone.
He says the hapu couldn't afford to take Little Barrier back because it would cost up to $4 million a year to run the island which is home to endangered, threatened, or rare species of flora and fauna.