Celtic assistant manager John Collins has claimed that Mikael Lustig has a "50-50" chance of being fit for the Bhoys' Champions League playoff second leg against Malmo on Tuesday.
The defender injured his hamstring during last week's 3-2 first-leg win and was absent as the Hoops beat Dundee United 3-1 at Tannadice.
Collins told BBC Sport: "[Lustig] has made a lot of progress in the last few days. We'll give him right up to the last minute to see if he can make it. I think it's safe to say he's 50-50."
Should Lustig not be fit enough to play against Malmo, Celtic could call on Efe Ambrose or Saidy Janko as options for the right-back role.