It looks increasingly likely that Elise Kellond-Knight will come into the midfield from the start, while Milicic also hinted at potential changes in the front three in the wide areas.
He moved Sam Kerr to the flanks during the game against Italy, but is likely to keep her central in this match to ensure she is more of a threat in front of goal.
Milicic said a decision on Polkinghorne would be made closer to kick-off time.
“Clare is one that she still has soreness, it’s a muscle injury, it’s obiously the hamstring. We know with those injuries that unless she has done sprinting work it makes it difficult to participate in such a game that will be played at a high tempo.
“We will give her every chance to be available for the game, we are a bit less than 24 hours, we will assess her in the morning. It’s getting better and better … but at the same time there is a duty of care towards Clare as well.
“We understand after we lost Laura Alleway that we are a bit thin in that area with the centre backs.
“She’s experienced enough and knows her body well. We will test that tomorrow and see how she goes.
”Lisa De Vanna looks to be OK, as does Caitlin Foord. Mary Fowler completed the majority of the session today.
“The one with Mary is how does she feel afterwards? Once she’s warmed up and trained she feels confident, but again with a young player getting to train and turn at high speed to getting ready to say 100 per cent with confidence she will play a part in the game, that’s a decision that we will have to make again tomorrow.”
A decision on Kellond-Knight will also be made on game day.
”I wouldn’t say she has missed a lot of football but she hasn’t played enough match minutes in the last couple of months.
”She came into (camp in) Turkey underdone and with a little bit of an injury. She has now done the work and got a bit more base fitness into her. She played 15-odd minutes the other day and has pulled up well with that.
”We will make a decision on her probably later tomorrow whether she will start the game or whether we will use her off the bench. It’s very positive for us that we can definitely get more minutes from her with the Brazil game than what she got against Italy.”
Catley said she was happy to move into a central role if required.
“We haven’t finalised everything yet, but it’s a role I know how to play and if I am needed there then I can definitely step in there and play a role.
“We have got an experienced backline and we still have the cool, calm and collected heads in there who can control the back line no matter who is in there.”
Milicic is aware that Brazil represent a very different threat to Italy, who played in compact style and hit Australia on the break.
”Brazil are a different type of opponent. We understand they want to use their individual skills, they like to play when the game is stretched, in two parts. They really are strong in transition and they back their front four in a four v four, four v five situation.
“What’s important for us against an opposition like them is that we really keep to our shape and structure really well and we are disciplined. We don’t want an end-to-end, open game. We want to play our principles, our way of playing, but at the same time we have to be tactically disciplined to play against a team like that.
“The focus comes back on to ourselves, we have analysed them and we are confident that we will come up with a positive performance.”
Michael Lynch is The Age’s chief soccer reporter and also reports on motor sport and horseracing