The Irishman was expected to be ruled out until the new year, but has been back in training this week, and could earn himself a place among the substitutes.
Manager Derek McInnes will also be able to call upon striker Steven Davies, who has been declared fit to face his former club.
Davies has shrugged off the knee problem which caused him to miss Saturday's 3-2 victory at Sheffield Wednesday.
Jody Morris and Martyn Woolford are also available for selection after recovering from their respective problems, but centre-backs Louis Carey (calf) and Lewin Nyatanga (hernia) remain absent.
Midfielder Cole Skuse (fractured cheekbone) and striker Jon Stead (groin) are also ruled out.