Kristoffer Ajer or Moi Elyounoussi will be deemed a close contact of Omar Elabdellaoui after the defender tested positive for coronavirus.
The Hoops pair are in the Norway squad alongside Elabdellaoui and it's been confirmed that he has the virus. They are yet to say whether any other members of the squad will be forced to isolate but Celtic will be desperate for the duo to avoid any issues after their squad was decimated with Covid last month.
Following the last international break, Odsonne Edouard, Ryan Christie, Nir Bitton and Hatem Abd Elhamed were all forced to miss games for Celtic.