Melbourne Victory star Archie Thompson will be assessed in the coming days after suffering a knee injury in his side's 3-1 win over Adelaide United in the Westfield FFA Cup 2015 Quarter Finals on Tuesday.
Thompson was stretchered off the park following an awkward collision after coming on as a second-half substitute.
"Everything else is irrelevant at this point in time. He's in a great deal of pain, but it's too early to make any assumptions. We'll have to get him looked at," Victory head coach Kevin Muscat said of Thompson.
"I'd hate to try and label what it is. It's not great, it's obviously his knee, but to try and assess what it is at this point in time is very, very difficult.
"I am positive. Hopefully we will get a positive result. I don't want to get drawn into hypotheticals. While there is some hope we will get some good news, I cling to that.
"He came on and he showed why we wanted to keep him in the club, the timing of his run, his awareness of the ball."
Muscat told Fox Sports after the game that the performance satisfied him and the effort was what he wanted from his charges.
"A good result but more pleased with the performance. I thought we dominated and pressed in high areas taking some risks," he said.
"We got rewards for those risks in the first half. And it's nice to be still in the hat (for the Semi Finals)."
Muscat, however, was not impressed by referee Peter Green who he felt should have taken more control throughout the contest.
"If some incidents early on were dealt with, he might not have been so busy," said Muscat.
"A reckless challenge on Fahid (Ben Khalfallah) with the goalkeeper to beat I suppose if you take action there, there aren’t so many ordinary challenges after it. It’s just disappointing.”
Muscat added new signing, Socceroo Oliver Bozanic, still had a lot more to give with match fitness key to his progress.
"He's still fighting fatigue because he's working pretty hard (in training). But we had to take him off to look after him and the risk increases the more fatigue you've got.
"But I thought he was very good tonight."