The National Rugby League has threatened to take the grand final to Queensland if the NSW Government changes its mind on rebuilding ANZ Stadium.

9NEWS has learned high level government discussions are taking place about winding back the $2.3 billion stadium rebuild plan. One of the options includes postponing the redevelopment of ANZ Stadium at Olympic Park with one senior source declaring "it's a live option."

If the government changes its policy, the Memorandum of Understanding signed by the NRL and NSW Government in November will be torn up.

The NRL grand final could be heading north to Queensland if the NSW government wind back its $2.3 billion stadium deal (AAP).

The NRL agreed to guarantee the grand final will be played in Sydney for the next 25 years on the proviso a world class rectangular stadium was built at Olympic Park.

Former Queensland Premier and chairman of the Australian Rugby League Commission Peter Beattie told 9NEWS if the obligations are not met, there is no longer a deal.

"No one should be under any illusions the Queensland Government want it (grand final). I've already had the Queensland Minister (Sports Minister Kate Jones) ring me," Mr Beattie said.

NRL executives have threatened to move the final should a Memorandum of Understanding between the league and the NSW government - which will see the game played in Sydney for the next 25 years if a rectangular stadium is built - ends (AAP). (AAP)

"If anything happens untoward, like ripping up the MOU, Queensland will be in like Flynn."

Elements within the NSW Government and the state Labor Opposition believe the NRL is bluffing and would not take the grand final interstate.

"That's a brave position," Mr Beattie said.

Former Queensland Premier and chairman of the Australian Rugby League Commission, Peter Beattie, told 9NEWS the Queensland government is already interested in hosting the event (AAP). (AAP)

"We expect the MOU to be honoured because we are honourable people."

Sources within the NRL say, if necessary, they're ready to fly to Brisbane next week and announce the 2020 grand final will be played there.

The controversial plan has earned significant community backlash and many within the NSW Liberal Party believe it's killing their chances of re-election.

The threat puts the Berejiklian government in a tight spot after already facing pressures from within the community and among its own ranks over the controversy linked to the plan (AAP). (AAP)

9NEWS understands the release of the business cases for Allianz Stadium at Moore Park and ANZ Stadium will be a point in which a policy change can occur.

Speaking to reporters in Goulburn, Ms Berejiklian was asked whether she would pull out of one or both stadiums if the business cases don't stack up.

"Our policy is out there. We're doing the detailed homework that you need to do for these projects and we look forward to sharing the detailed homework in it's complete," Ms Berejiklian said.

Luke Foley is making political mileage out of the controversy but is yet to declare a clear position.

9NEWS understands if the demolition of Allianz Stadium at Moore Park occurs before the March 2019 election and Mr Foley is elected, he will not proceed with the redevelopment of a stadium at Olympic Park. However, if no contracts are signed his preference is ANZ Stadium over Moore Park.