The tennis star took a break afterwards as she came to know during the tournament that she was pregnant, and gave birth to a daughter named Alexis Olympia Ohanian Jr. on September 1, 2017.
Serena Williams is set to defend her title at the first Grand Slam of 2018What's the story?
Now ranked No.22 in the world, Williams told CNN in July she was intending to return to tennis - echoing the words of her spokespeople - and if the American does show up in Melbourne, it would come about four-and-a-half months after she gave birth.
Tiley insists her return is "very likely" with just over a month go go until the start of the tournament.
He told the Herald Sun: 'She's got her visa, she's entered, she's practising and she's probably just got to find a bit more space for a bigger entourage.
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"We'd be pretty excited about the possibility (of her coming)", he added.
Williams, who has won the Australian Open seven times, has posted on social media that she has returned to training.
She has not played competitively since Melbourne, raising questions over whether the 23-time Slam victor would attempt to defend her title next month and equal Australian Margaret Court's singles record of 24 major titles.
The Australian Open runs from January 15-28 with the Melbourne-Cairns showdown on the 24th.