Saints are without Martin Hardie, captain Kevin Rutkiewicz, Steven Anderson, Stuart McCaffrey, Kevin Moon and Andy Jackson. Murray Davidson, Graham Gartland, Peter MacDonald, Collin Samuel, Cillian Sheridan are also out for the visitors.
Celtic: Boruc, O'Dea, Loovens, Hooiveld, Maloney, McCourt, Braafheid, Hinkel, Wilson, Thompson, McGeady, N'Guemo, Crosas, Samaras, Keane, Rasmussen, Zaluska, Fortune, Ki, Caddis.
St Johnstone: Smith, Grainger, Irvine, Duberry, MacKay, Morris, Craig, Millar, Morais, Deuchar, Sheridan, Reynolds, Milne, Falkingham, Sheerin, Main, Swankie, May, Connolly.
Source: BBC Sport
Source: BBC Sport