Aberdeen striker Kevin Nisbet has been called up to Steve Clarke’s Scotland squad for the upcoming Nations League fixtures against Croatia and Portugal.

The 27-year-old has not played for his country since a substitute appearance in a 2-0 win over Georgia in June 2023, but replaces Lawrence Shankland in the squad after helping Aberdeen to 13 consecutive wins at the start of this season.

Nisbet joined the Pittodrie club on loan from Millwall over the summer, and has scored three goals in seven outings for Jimmy Thelin’s side.

Nisbet joins Aberdeen teammates Nicky Devlin and Jack MacKenzie in the squad, while Shankland’s withdrawal – after he missed training on Tuesday – adds to an ever-growing injury list.

Captain Andy Robertson was also not at Tuesday’s training session in Glasgow, along with Scott McTominay, Kenny McLean and John Souttar.

First-choice goalkeeper Angus Gunn (ribs) and left-back Greg Taylor (calf) had already been ruled out of the double header, with 10 others unavailable for selection, including influential vice-captain John McGinn.

Scotland visit Zagreb on Saturday before hosting Portugal three days later.

Portugal lead Group A1 on six points, with Croatia and Poland both on three and Scotland yet to get off the mark.