Ryan Jack serves the second game of his two-match ban for Aberdeen following his red card for serious foul play against St Johnstone. Chris Clark (knee), Youl Mawene (hamstring) and Fraser Fyvie (groin) are all doubtful. Scott Brown serves the second of a two-match ban for Celtic, who are also missing defenders Glenn Loovens (hamstring), Thomas Rogne (calf) and Mark Wilson (hip) are out. Aberdeen (from): Gonzalez, Foster, Considine, Arnason, Robertson, Magennis, Paton, Milsom, Osbourne, Pawlett, Megginson, Vernon, Low , Mackie, Jason Brown, McArdle, Jordan Brown, Fraser, Clark, Mawene, Fyvie. Celtic (from): Zaluska, Matthews, K Wilson, Cha, Majstorovic, Izaguirre, Ki, Wanyama, Kayal, Maloney, Mulgrew, Commons, Ledley, Forrest, Samaras, McCourt, Stokes, Hooper, Cervi.