Celtic went one point clear of Aberdeen at the top of the Ladbrokes Premiership with a 2-2 draw against Hearts on Sunday but not without sustaining more collateral damage.
Midfielder Stuart Armstrong and defender Dedryck Boyata had to be replaced in the first-half of a bruising encounter at Tynecastle with respective back and hamstring injuries which make them unlikely to face Dundee at Dens Park tomorrow night.
Substitute Efe Ambrose and stand-in skipper Mikael Lustig had to work through knocks as goals from Nir Bitton and Tom Rogic were cancelled out by strikes from Sam Nicholson and Osman Sow.
Top scorer Leigh Griffiths was missing for the fourth game in a row with a calf injury and Kris Commons was absent after picking up an ankle knock in training while long-term injured skipper Scott Brown and Charlie Mulgrew remain out.
Hoops boss Ronny Deila said: "Dedryck got a hamstring injury and Stuart has problems with his back so it will be very hard to get them ready for Wednesday's game against Dundee.
"Leigh tested himself on Saturday and he wasn't totally there.
"He is still getting stiffness in his calf when he starts running so it is still too early.
"He is very close, it could be Wednesday, it could be Saturday, it could even be a week afterwards but it is not a long-term injury thankfully.
"Kris got a knock in training. It was a normal tackle but unfortunately he got a bad hit and got a swollen ankle.
"We have to take a picture (scan) of it but we don't think it is a very serious thing and hopefully he can be ready to play on Wednesday.
"Efe and Mikael went down as well but we got through it and we got a point.
"It was an okay performance and that is something we have to take with us. I am satisfied with a lot of things."
Celtic's performance was much improved from last week's 2-1 home defeat to Motherwell but Deila is looking to get back to winning ways against Dundee.
The Norwegian said: "That is always important.
"If you are going to be champions you have to win football games and we have to get back to winning games as quickly as possible.
"They (Dundee) are offensively very good.
"They score goals so we have to be good defensively but we also know that if we defend well we will get our opportunities, so it is to attack with balance and be aware of what strengths they have."