Neil Lennon has revealed Celtic skipper Scott Brown might need an injection for Wednesday's UEFA Champions League qualifier in Helsinki.
Brown's hip injury saw him miss Celtic's opening 1-0 win over Aberdeen in the Scottish Premier League on Saturday.
But the 27-year-old Scotland international could prove more essential for the second leg of their Champions League qualifier against HKJ as the Hoops hold a slender 2-1 lead.
Lennon admits he will have to assess his captain's injury carefully before making a decision.
"Scott had a scan on his hip and he has a bit of degeneration in there, on the disc," said Lennon.
"Whether we can get him through Wednesday... we will see how he is on Monday.
"He was very sore yesterday and it's not like Scott. It might mean an injection and hopefully that will calm it down.
"It might need to be seen to down the line but it is not a massive concern for us at the minute.
"It is never a risk when you play Scott but we will work closely with him over the next couple of days and see how he is."
Lennon will welcome winger James Forrest back from a groin injury while stand-in skipper Georgios Samaras should recover from the head injury that forced him off against the Dons.
The Northern Irishman said: "Forrest will be fine. Samaras got a kick to the face today and he felt a big groggy. He wanted to give it 10 minutes after the break.
"He is still feeling dizzy so we will have to see how he is, but he should be okay. Charlie Mulgrew was suspended so he will come back into contention."