Kilmarnock will be without skipper Manuel Pascali for their Clydesdale Bank Premier League game against Aberdeen after he was ruled out for the rest of the season.
The captain will go under the knife next week to cure a hamstring problem and faces months on the sidelines.
Momo Sissoko is doubtful with a virus, while Jeroen Tesselaar looks set to miss out with a hand injury.
Aberdeen will be without Isaac Osbourne after he was ruled out for at least six weeks.
The midfielder faces a lengthy lay-off after suffering a hamstring tear during last week's win over Dundee.
The Dons are boosted by the return of Mark Reynolds from suspension for the visit to Rugby Park.
Kilmarnock (from): Bell, Barbour, Fowler, Sissoko, Clingan, McKenzie, Dayton, Racchi, O'Leary, Borja, Heffernan, Gros, O'Hara, Letheren, Hay, Ibrahim, Winchester, Johnston.
Aberdeen (from): Langfield, Anderson, Shaughnessy, Magennis, Robertson, Naysmith, Hayes, Rae, Pawlett, Milsom, McGinn, Hughes, Vernon, Fallon, Twardzik, Smith, Jack, Reynolds.