The tough centre-half strained a hamstring late in Saturday nightâ€™s 3-1 win over Adelaide United and wonâ€™t be risked if he is not at full fitness according to coach Branko Culina.
â€œIf he's not right by tomorrow he won't play," Culina said yesterday.
"We don't want to risk it.
"With the workload we're facing in this two-week period, we need to be a bit careful how we manage the players.
"I'm happy to wait until tomorrow to see how Ljubo recovers but if there is any doubt, we'll have to bring in a replacement and give him time to prepare."
If Milicevic does happen to miss, youngster Taylor Regan is a likely replacement in the back four.