Martin Hardie, Peter MacDonald and Stuart McCaffrey remain out while captain Kevin Rutkiewicz continues his to recover from a knee injury.
Dundee United team news to follow.
St Johnstone (from): Smith, Grainger, Duberry, MacKay, Anderson, Morris, Craig, Morais, Millar, Irvine, Deuchar, Sheridan, Samuel, Sheerin, Main, Swankie, Reynolds, Falkingham.
Dundee United (from): tbc.
Source: BBC Sport
Source: BBC Sport