Celtic were dealt a further injury blow as Greg Taylor hobbled off against Ross County after Reo Hatate and Aaron Mooy failed to make the squad.
The left-back had started in the Highlands but couldn't continue after the hour mark where he appeared to be contending with pain in his right leg.
It's a worry for Ange Postecoglou with a match against Rangers at Parkhead coming on April 8.
Fortunately, Taylor walked himself off the pitch without assistance but the defender was grimacing in pain.
It's not yet clear what kind of injury affected Taylor. Alexandro Bernabei replaced the full-back in Dingwall after 64 minutes.
Postecoglou was already without Mooy and Hatate for the Ross County clash due to knocks but there was a positive update on the pair pre-match.
"Hopefully next week," Postecoglou told Sky Sports when asked if Hatate would be back soon.
"Him and Aaron were close but not quite ready. We've got a full week after this game and if everything goes well he should be available."
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