The centre-back had to be taken off on the hour-mark in the Hoops' last game.
Celtic are concerned that they will be without Erik Sviatchenko for their Scottish Cup semi-final clash with Rangers next weekend as the defender tries to get over a thigh injury, The Scottish Sun reports.
The 24-year-old had to be replaced after an hour of the Hoops' Scottish Premiership clash with Dundee in midweek, and The Scottish Sun claims that he will miss the club's game with Motherwell on Saturday and faces a battle to be ready for the Hampden Park showdown against their Old Firm rivals.
If the Denmark international was to miss the game against Mark Warburton's men, it would be a big blow to Ronny Deila's side as they look to secure the double.
The £1.5m signing has taken little time to adjust to life at Parkhead, and had started to form an impressive partnership alongside Charlie Mulgrew at the heart of the team's defence.
In the last 10 games Sviatchenko has featured, the Bhoys are unbeaten and have conceded just three goals along the way.
With the centre-back in danger of missing out against the Gers, Deila will surely be hoping that Mulgrew and Dedryck Boyata make it through the game against Motherwell unscathed as, with Jozo Simunovic out for the rest of the season (via The Scottish Sun), he would have just Efe Ambrose and Tyler Blackett left to choose from.