Celtic manager Neil Lennon will return to take training on Monday as his side gear up for the second match of a Livingston double-header.
The Parkhead boss, assistant John Kennedy and 13 senior players were forced to isolate after being identified as close contacts of Covid-positive Christopher Jullien.
That means a skeleton squad to take on Livi at Celtic Park on Saturday but the first team will be back for the trip to the Tony Macaroni Arena.
Gavin Strachan, who will take the team this weekend, said: "As I understand it, I think it is Monday that they (Lennon and Kennedy) are back in.
"We have some guys back in on Sunday, and some back in on Monday, as I understand it.
"They will be assessed in terms of their fitness because they have been off for a little while but they should be available for selection.
"Everyone that was involved on Monday against Hibs and who was in here (Lennoxtown) training during the week have all returned negative tests."
Celtic first face Livingston on Saturday and will still be without their isolating players and staff but 19-year-old Scott Robertson will be added to the squad after returning from a loan at Gillingham.
Strachan said: "Scott Robertson is back in. His loan at Gillingham has been ended so he has come back into the fold.
"He is another one, good player, good character, who has come back in.
"He is still a young lad but he played nearly 20 games for Gillingham so he is primed and ready to go.
"But for the most part it is going to be the same guys who were there on Monday.
"It has been a steep learning curve for most of them.
"But hopefully as their careers progress it turns out to be a positive experience for them, being around the first-team environment, seeing what the demands are, seeing the processes we work to and hopefully they can develop."