Charlie Mulgrew is suspended for the visitors and Zander Diamond misses out through injury.
Sone Aluko remains a doubt, while Gary McDonald, Peter Pawlett and Andrew Considine are long-term absentees.
St Johnstone: (from) Smith, Grainger, Gartland, Sheerin, Irvine, Mackay, Anderson, Morris, Craig, Davidson, Morais, Millar, Deuchar, Milne, Sheridan, Samuel, Rutkiewicz, Main, Swankie, Reynolds.
Aberdeen: (from) Langfield, Foster, Kerr, Fyvie, Mackie, Paton, Ifil, Duff, Nelson, Young, Marshall, Grassi, Aluko Jack, Grimmer, Shaughnessy, MacLean, Robertson.
Source: BBC Sport
Source: BBC Sport