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Ange Postecoglou’s side went down 2-1 to Japan on Tuesday night in their final hit-out before the tournament kicks-off in Australia in under two months.
While there have been some encouraging performances against some powerful nations, the Socceroos have struggled for results in 2014, with just one victory for the entire year.
It’s highlighted a few deficiencies the side must iron out quickly and left some serious question marks about their credentials for the Asian crown.
Asked how confident he was of Australian doing well in the Asian Cup, Bosnich told www.socceroos.com.au he wasn't overly confident right now but felt come Cup time, things will be better.
“In terms of their preparation from what we’ve seen (in the friendlies) no. You have to be brutally honest.
“Ange said before we’ll be ok but it’s very difficult to switch things on and off in life in general.
“The only thing we’ve got to go off as the public is what we’ve seen in the friendlies. Looking at the friendlies we’ve had since the World Cup, no we haven’t been confident but I believe come the tournament we’ll be fine.”
The Socceroos begin their Asian Cup quest with a clash against Kuwait in Melbourne on January 9, before further group games against Oman and Korea Republic.
While most expect the Socceroos and Korea to advance easily from the group, Bosnich warned against under-estimating the other two nations.
“We haven’t got the best of records again Kuwait. If anyone remembers during the last Asian Cup qualifiers back in 2009 they actually beat us here in Canberra,” the former Manchester United and Chelsea gloveman said.
“Oman, I’ll never forget the game here in the last World Cup qualifying series when it was 2-2 and only a Brett Holman goal saved us.
“And I don’t have to say anything about South Korea who are one of the favourites.
“Momentum is everything in a tournament and we’ve seen in the last three World Cups.
“We saw when we beat Japan in 2006 what that did and we also saw when we lost to Germany in 2010 in South Africa what that did,” Bosnich said.
“The home crowd can be a double-edged sword. It’s great to have them behind you when you’re doing well but not so good to play in front of them when you’re not.
“Getting off to a good start is going to be absolutely imperative.”