Football Australia interim chief executive Heather Garriock will hold a press conference for a Matildas major announcement at 10am AEST on Monday, with Montemurro expected to join her.
Experienced women's football coach Montemurro on Sunday departed French powerhouse Lyon with a year left on his contract, paving the way for the Melburnian to officially take the Matildas job.
Sunday was exactly 10 months since Tony Gustavsson departed on August 1, 2024, after a miserable Paris Olympics.
The Matildas, currently ranked world No.16, have been without a permanent head coach since then, amid a protracted recruiting process that frustrated players, though Montemurro's appointment has been expected for months.
Tom Sermanni will finish up his eight-and-a-half-month stint as interim coach in Monday night's clash with Argentina in Canberra, with Montemurro set to be in place against Slovenia at HBF Park on June 26.
Montemurro, 55, has won trophies at Lyon, Juventus, Arsenal and Melbourne City and is now poised to take the Matildas to the Asian Cup along with qualifying for the 2027 Women's World Cup and 2028 Olympics.
He previously was among those to miss out to Gustavsson in 2020 and has never hidden his interest in coaching the Matildas.
"The club would like to thank Joe for his commitment throughout the season," Lyon said in a statement on its website.
"Under his leadership, the team won its 18th French championship title, further cementing its exceptional record.
"OL Lyonnes wishes him all the best in his future career."
Monday will be Sermanni's 151st and last game at the helm.
In his final game, Sermanni is keen to build momentum while he has also tested more young players to add to Australia's depth ahead of the Asian Cup.
"Since coming into the job it's just really been important to try and keep everything stable, everything ticking along so that hopefully the new coach comes in and can then really start to take the program forward in the direction that he or she wants to take it in," Sermanni said.
"For me it would just be business as normal, and I think we're in the situation with a squad where a lot of players are looking forward towards the Asian Cup, and there's a lot of competition for places in that final 23-player squad."
Sermanni used his final pre-match press conference to go in to bat for Canberra United, whose A-League Women future remains constantly under threat.
On Sunday, he said of the sold-out Matildas game at GIO : "It's a great indication that we need to keep Canberra United in the A-League Women's competition.
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