Newcastle boss Steve Bruce confirmed medics will make a decision over the weekend on whether or not defender Ciaran Clark will undergo surgery on the ankle ligament injury which appears to have ended his season.
Clark suffered the injury against Arsenal on 16 February and will miss Republic of Ireland's Euro 2020 play-off against Slovakia next month as a result.
"We're just deciding now in the next week or so whether he's going to have the operation or not," said Bruce.
"He's obviously damaged ankle ligaments badly, so the decision is whether to operate or not.
"I think we'll be in the next 48 hours deciding which way we're going to go."
After suffering the injury, Clark left Arsenal's Emirates Stadium on crutches and had been wearing a protective boot.
The 30-year-old had been in fine form for Newcastle and had also returned to action for Ireland as a half-time substitute in the 1-1 qualifier draw with Denmark in November.
But he could miss Euro 2020 even if Ireland do progress through the play-offs.
Clark's misfortune is the latest in a series of injuries which has already robbed Bruce of Paul Dummett and loan signing Jetro Willems for the remainder of the campaign.
Bruce said: "He's been excellent this season. It's been cruel in that respect with Matt Ritchie with a tackle and out for four months, and now Ciaran and Dummy. Unfortunately, it's been never-ending.
"But when it happens on impact in a game, you can't legislate for it either. It's disappointing for Ciaran. He has been one of our better players this year, in my opinion, and done very well, so it's bad news for all of us."