Derek McInnes who only brought the Scotland Under-21 striker in on-loan from Stade de Reims on the final day of the transfer window. An Aberdeen statement confirmed: "Upon further investigation a scan has shown Fraser has suffered a significant tear on his thigh that will keep him out for a period of time." Hornby, who has made just five appearances for the Dons, suffered the injury when he hit a first half shot in Saturday’s win over Kilmarnock.