Edinburgh flanker Magnus Bradbury is doubtful for the upcoming autumn internationals for Scotland following a shoulder injury.
The 23-year-old sustained a dislocated shoulder in Edinburgh's 40-14 victory over Toulon in their Champions Cup encounter where he left the field holding his arm.
Bradbury is set to undergo a scan this week but Edinburgh head coach Richard Cockerill believes the former Scotland under 20 international will be out for weeks.
"The best-case scenario is a few weeks, the worst-case scenario could be three-to-four months," he said.
"We just have to wait on the opinion from the scan."
Bradbury made his Scotland debut in November 2016 and has made four international appearances including this year's summer international against Argentina.
He was a front-runner for Gregor Townsend's side to start in the opening game against Wales after John Barclay was sidelined.
Scotland will face Wales, Fiji, South Africa and Argentina in their November series campaign.