Melbourne Lord Mayor Robert Doyle predicts Etihad Stadium will be gone in 20 years.
Doyle said the stadium cuts off the Docklands precinct from the CBD and it would be better to build an AFL-sized venue at nearby Western Park.
The AFL is due to take over ownership of the stadium in 2025.
"In the time-frame you're talking, Etihad Stadium will disappear," Doyle told Radio 3AW.
"It's a great idea for another stadium close to the city, but I would have thought that's one of the things that cuts off Docklands from the city.
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"I don't mind a stadium in the Docklands, it's just we can look down and see Western Park, it's down towards Bolte Bridge.
"There's room down there to put an AFL-sized ground and it doesn't block off the city from Docklands."
Etihad Stadium opened in 2000 and is used for AFL, soccer, the rugby codes and cricket, as well as concerts and other special events.
