Lock Richie Gray was left out of Gregor Townsend’s Scotland training squad for the November internationals because he will have a back operation.
The same back problem ruled him out of Scotland’s June international tour to Singapore, Fiji and Australia.
Gray was a notable absentee from the 41-man training camp squad named by Townsend on Thursday.
According to a source close to his club Toulouse, he needs surgery to repair the niggling back problem and is set to miss at least two to three months.
Scotland squad for 2017 August camp:
Injured players invited to camp: Fraser Brown (Glasgow Warriors), Allan Dell (Edinburgh Rugby), David Denton (Worcester Warriors), Jonny Gray (Glasgow Warriors), Rob Harley (Glasgow Warriors), Stuart Hogg (Glasgow Warriors)
Not considered through injury: Mark Bennett (Edinburgh Rugby), Alasdair Dickinson (Edinburgh Rugby), Richie Gray (Toulouse), Rory Sutherland (Edinburgh)
Scotland 2017 Autumn Tests
Saturday 11 November – Scotland v Samoa, BT Murrayfield Stadium (kick-off 2.30pm)
Saturday 18 November – Scotland v New Zealand, BT Murrayfield Stadium (kick-off 5.15pm)
Saturday 25 November – Scotland v Australia, BT Murrayfield Stadium (kick-off 2.30pm)