Ryan Fraser returns to the Scotland squad for September's Nations League matches, but captain Andy Robertson misses out through injury.
On Monday, Liverpool boss Jurgen Klopp revealed left-back Robertson would not be fit until October.
Newcastle winger Fraser made himself unavailable last November, a decision for which he later apologised.
Scotland play home and away against Ukraine (21st and 27th) and at home to the Republic of Ireland (24th).
Steve Clarke's side currently sit second in Group B1, one point behind Ukraine and two points in front of the Irish.