Optus Stadium will host the 2021 AFL Grand Final should the most recent Covid-19 outbreak in Victoria fail to be thwarted by the last Saturday in September.

Despite AFL CEO Gillon McLachlan announcing on Wednesday afternoon that the decider appeared likely to be crossing the Nullarbor later next month, the final decision does not sit solely in his hands, with call as to whether the event will once again be played away from the MCG lies with the Victorian State Government.

With a further 45 cases of Covid-19 transmitted and acquired in the southern state on Wednesday, it appears as though any efforts to stage the Grand Final before a crowd in the historic Yarra Park precinct are likely to prove futile.

MELBOURNE, AUSTRALIA - SEPTEMBER 29: The MCG is seen as the sun rises before the 2018 Toyota AFL Grand Final match between the West Coast Eagles and the Collingwood Magpies at the Melbourne Cricket Ground on September 29, 2018 in Melbourne, Australia. (Photo by Michael Willson/AFL Media/Getty Images)

Although the ultimate resolution sits at the feet of the politicians on Spring Street, McLachlan claimed their intentions would likely be handed down by the end of the week.

"If we're unable to play at the MCG, the Grand Final will be at Optus Stadium. Our priority clearly will be the health and safety of the West Australian community. We'll work through the quarantine facilities and restrictions for our playing groups and it will be an amazing venue in the event the MCG is unavailable," he said in his afternoon press conference.

As their city is set to play host to a pair of finals this weekend, South Australians are almost certain to be aggrieved that the Adelaide Oval was passed over for nomination to host the showpiece game.

Still, McLachlan claimed that due to their state's ability to host capacity crowds, the Western Australian venue had been nominated ahead of the storied cricket ground.

ADELAIDE, AUSTRALIA - MARCH 27: A general view of play showing the shot clock during the round one AFL match between the Port Adelaide Power and the St Kilda Saints at Adelaide Oval on March 27, 2016 in Adelaide, Australia. (Photo by Daniel Kalisz/Getty Images)

"They've both got their merits but the capacity available at Optus Stadium is 100 per cent and that's pretty compelling, to have as many people as we can see the biggest and best sporting event in the country," he said.

Due to the ambiguity surrounding the ever changing landscape, the host venues for the September match-ups to be held in weeks two and three of the finals are yet to be announced and will depend on the results from this weekend's four-games.