Scotland international Steven Fletcher is awaiting scan results on an injury to his right ankle, which is certain to rule him out of his nation's upcoming clash with England in Glasgow.
Fletcher suffered a knock during a heavy tackle from Everton winger Aiden McGeady and limped off the field of play when replaced by Chris Martin on 56 minutes.
The Sunderland star was later seen sporting a protective boot - as a precautionary measure - when talking with captain Scott Brown in the aftermath of a famous 1-0 victory over the Irish.
He subsequently underwent a scan on the injury during the course of Saturday, while being ruled out of Tuesday evening's clash with the Auld Enemy by Scotland boss Gordon Strachan.
Both Gus Poyet and Fletcher remain hopeful of his participation in Saturday's away game at Leicester City, but the player admits he doesn't know the seriousness of the issue at this stage:
“I have no chance of making the England game.
“I just hope I can be back for the Sunderland game at the weekend, but even then I need to wait and see what the extent of the injury is.”
It's the second time the ex-Wolves man has been ruled out of a tasty fixture with England, having also missed out on the 3-2 Wembley defeat against the same opposition last August.
All concerned will be hoping for good news when the medical report comes back in order to allay any lingering fears of another lengthy spell on the sidelines for the in-form forward.