Derek McInnes faces an anxious wait to discover the severity of the Tommie Hoban knee injury that overshadowed the 2-2 draw with Ladbrokes Scottish Premier League basement boys St Mirren yesterday.

Hoban, who joined the Dons on loan from Watford in the summer after recovering from a torn anterior cruciate ligament in his right knee, missed much of the first half of this term with a shoulder injury that required surgery.

He now faces another lengthy absence after his studs caught in the Pittodrie turf just before half-time yesterday.

McInnes said: "It's a knee injury of some sort, we don't know exactly what. We'll get him scanned on Monday. I'm hoping it's not as serious as it appears, and if there's any justice for him it won't be with the amount of injuries he's had.

"It's too early to speculate, but he's in a bit of discomfort so we'll see how he goes. I was talking to the press before the game and saying how good a player he's been for us and how he deserves the opportunity to go and get some games in because he's such a good player. It's a real disappointment."