United already had a mountain to climb in a 3-0 deficit against Melbourne City ahead of Saturday night's semi-final second leg at AAMI Park.
Then Professional Footballers Australia served the club with breach notices over "unacceptable" unpaid wages and superannuation on Tuesday.
United must complete payments within two weeks, by Tuesday June 3, or players can take further action, including termination of contract.
The timing couldn't be much worse - but unfortunately, Aloisi and his charges can call on experience.
"It's happened more than once, so we've been able to deal with that in the past," Aloisi said.
"So we, the players, won't use it as an excuse.
"The club's going through this transition at the moment in terms of a takeover, so it has been difficult at times for the club, which we understand.
"But the players have never, in the last (however) long, have never used it as an excuse or even really let it affect their football and our focus at all times has only been on doing well and playing, and they've done well for the whole season.
"So I'm sure they'll be ready for tomorrow night, no matter what the news was during the week.
"Because it's news that got out, but it's something that we've been dealing with internally for a period of time."
It's understood the majority of payments were settled by Friday, with Western confident of completing the rest by early next week.
"My understanding is that everyone's being paid at the club," Aloisi said.
"Even like speaking to the boys today about things in general, no-one ever mentioned about that to me. So it means it wasn't affecting them that much."
Aloisi is unclear how far off the proposed takeover by new investors KAM Melbourne is.
But he is confident the drama hasn't affected his work with the players.
"From my side, hasn't affected preparations at all," he said.
"My job the whole year, even when we've gone through some difficult circumstances, which have been there for a period of time, that is to keep the boys focused on playing well, preparing well.
"It's been the same this week, and they've done really well."
Star striker Noah Botic is clear to start after he was limited to a bench role through a quad injury last week, while James Donachie (adductor) is fit.
Aloisi is adamant United can overcome the deficit.
"We've had periods of games where we've scored three or four goals within a 10-15 minute period. So we know we can do that," he said.
"The main thing is not to be anxious, not to panic, to play with freedom.
"We've got nothing to lose. They've got everything to lose because they're in such a good position."
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