Gary Hamilton is awaiting a further update on Mark Haughey after he limped out of Friday night's 1-0 defeat to Larne.
The experienced defender was forced off before the break and looked in considerable discomfort as he made his way to the changing room.
Speaking after the game Lurgan Blues boss Hamilton said "it looks a serious one" when asked for an assessment on the injury, but he added Haughey would need a scan to determine the severity of the injury.
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"It didn't help us and it looks a serious one as well," said Hamilton after the defeat.
"He will have to go for a scan to see what has happened, but at this moment in time and first viewing it looks serious unfortunately."
It did little to help Hamilton's mood as he felt his side should have got something out of the game before Sean Ward's late own goal.
"That is 100% harder to take than the defeat at Dungannon last week," he said.
"We played well tonight and I thought for a large period of the game we were the better team, but we conceded from a set piece again, which has killed us.
"I can't fault the guys in terms of their effort, desire and hunger and being in the game, but that's what happens sometimes.
"After we conceded they did get the better of us in the last ten minutes as we were trying to push forward to get the goal and they hit us on the counter.
"We thought we were maybe going to get something from the free kick right at the end but it just wasn't to be.
"I'm frustrated with the result, but in terms of performance I can't fault the boys and I couldn't ask them for any more.
"The one criticism I do have is we didn't work their goalkeeper enough even with all the possession we had and after getting ourselves in good areas."
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