Scotland’s fly-half Finn Russell has undergone concussion protocol following a knock in Racing 92’s Top 14 loss at Toulouse.
The 26-year old will be monitored and will be subject to the “return to play protocol”.
The earliest Russell could play would be Saturday, the day of the France game, but any symptoms will mean he won’t feature on Saturday.
Worcester Warrior’s Duncan Weir has been added to the squad as a precaution, alongside five others.
Edinburgh players Marcus Bradbury, Dougie Fife and James Johnstone have been added to the squad, alongside Glasgow Warriors forwards Zander Fagerson and George Turner.
Despite Weir’s call-up, Glasgow’s Adam Hastings would likely take Russell’s place should he fail to recover in time.
The loss of Russell will be a big blow for Scotland, the fly-half had a hand in all of Scotland’s tries against Italy and set up their try against Ireland.
Scotland head coach Gregor Townsend is already without his first-choice back-row from last year in John Barclay, Hamish Watson and Ryan Wilson.
Forward’s Sam Skinner and WP Nel are also out alongside backs, Stuart Hogg and Huw Jones.
In more positive news for Scotland, Stuart Hogg’s injury is not as bad as first feared.
Full-back Hogg was taken off 16 minutes into his sides last game over Ireland with a shoulder injury and was originally thought to be out for the remainder of the Championship.
But the 26-year-old is now an ‘outside bet’ to make a return for the final round Calcutta Cup clash against England.
Written By Sam Bytheway