The NRL has reminded the NSW government that their recent 20-year commitment to play grand finals in Sydney hinges around the major redevelopment of ANZ Stadium.

Uncertainty surrounding stadia investment in Sydney could open the door for the NRL, as well as the FFA, to backflip on the memorandum of understanding that was signed in relation to a content guarantee last year.

At a recent meeting with the NRL, NSW premier Gladys Berejiklian asked for clarification surrounding the details of that particular MOU, as she continues to ponder the breakdown of the investment into Sydney stadia.

NRL chief executive Todd Greenberg may not have been bullish in his response, but it's understood Berejiklian was left under no illusions as to what needed to happen to secure a two-decade guarantee from the NRL to play grand finals and State of Origin games in Sydney.