Cameron Carter-Vickers has placed Celtic on injury alert after he was withdrawn from today's proceedings at half-time.
Brendan Rodgers opted to take the defender off as a precaution during the break of this afternoon's game at Pittodrie.
The America international, 25, recently made his comeback from a lengthy spell out on the sidelines.
He started last week's match against Ross County in his first full game back since April.
He went under the knife at the time for a knee issue which ruled him out for around three months.
Rodgers and the Celtic faithful will be hoping his latest knock is nothing serious after he failed to see the full game out in the north east.
Stephen Welsh was brought on as Carter-Vickers' replacement against the Dons.
Reo Hatate, who was brought on at half-time for David Turnbull, is also a fresh injury concern after he was forced off during the second period. Holm replaced the Japanese international in midfield.
Meanwhile, Alexandro Bernabei has been branded a "bit of an idiot" by Chris Sutton.
The Argentine full-back was this week punished by Celtic boss Brendan Rodgers after he slept in and missed an early morning team meeting.
The left-back was dropped from the team for last week's Premiership opener against Ross County, which the Hoops went on to win 4-2.
Bernebei, 22, had been playing for the club during pre-season and particularly showed up well in James Forrest's testimonial.
And Sutton believes Bernabei has a lot of making up to do with his teammates.
He joked: "Blimey you've had such a good start this morning Gordon then you bring up another negative about Celtic, the Treble winners.
"They won last week and you're going with the Bernabei story? You're quite right to bring it up and Brendan left Bernabei out cos there's no excuse for being late for a team meeting.
"He's a bit of an idiot really because it's a new manager, a clean slate and he hasn't done himself any good."
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