The youngster is on international duty with the Scotland Under-19 team and will miss the third-round tie.
Dons boss Craig Brown has no fresh injury concerns ahead of the clash at Pittodrie.
Aberdeen (from): Brown, Foster, Considine, Mawene, Osbourne, Milsom, Vernon, Arnason, Jack, Clark, Chalali, Pawlett, Fallon, Mackie, Magennis, Langfield, McArdle, Gonzalez.