Ross County full-back Marcus Fraser could require surgery on his dislocated shoulder.
The 21-year-old picked up the injury in the final 10 minutes of Saturday's 2-0 defeat by Celtic in Glasgow.
Fraser will see a specialist on Monday to determine whether he will require an operation to repair the damage.
The defender moved to the Dingwall club on a short-term deal after leaving Celtic in January 2015 and later had his contract extended until 2017.
Fraser, who has made 27 appearances this season, will be missing for County as they host Hamilton Academical in the Scottish Premiership on Saturday.