Council cost-cutting could result in the Warriors shifting to Eden Park and speedway going to Mt Smart Stadium.
Regional Facilities Auckland is proposing moving speedway from Western Springs instead of upgrading the Warriors' home ground.
The Warriors would then move to Eden Park, to make better use of the city's biggest stadium.
Warriors CEO Wayne Scurrah says he only found out about the plan through the grapevine.
Scurrah says he needs more details and many factors need considering.