Kieran Tierney will miss Scotland's World Cup play-off programme but Nathan Patterson has been included in Steve Clarke's 28-man squad despite recent surgery.
Arsenal defender Tierney was booked in for knee surgery early in April after feeling discomfort in a training session and he will not make it back for Scotland's June schedule.
But Everton right-back Patterson has been included following ankle surgery around the same time. Toffees boss Frank Lampard had estimated an eight to 10 week absence for the former Rangers player.
But Everton right-back Nathan Patterson (right) has been included following ankle surgery
Chelsea midfielder Billy Gilmour is also selected after missing the final game of his loan spell at Norwich with a minor injury.