Ross County defender Tom Grivosti remains out with a foot knock for the visit of Aberdeen.
County have no fresh injury concerns, with Nathan Baxter still nursing a shoulder problem.
Iain Vigurs (foot) and Don Cowie (knee) are working their way back to fitness.
Aberdeen welcome back Craig Bryson following an ankle injury.
Defender Ash Taylor is fit but boss Derek McInnes is mindful of his four-month lay-off as he considers when to bring him back from a hamstring problem.
Sam Cosgrove has shaken off the knock that forced him off last weekend while Funso Ojo (hamstring) and Scott Wright (knee) remain out.
Aberdeen provisional squad: Lewis, Logan, Leigh, Vyner, Considine, McKenna, Taylor, Devlin, Gallagher, McGinn, Hedges, Bryson, Cosgrove, Anderson, D Campbell, McLennan, Wilson, Gleeson, Ferguson, Main, Cerny.
Provisional Ross County squad: Laidlaw, Foster, Fraser, Kelly, Fontaine, Grivosti, Watson, Spittal, Paton, Chalmers, Mullin, Gardyne, Draper, Stewart, Spence, Reid, McKay, Graham, Erwin, Power, Henderson, Morris, Ruddy.