Motherwell defender Charles Dunne was ruled out for up to four months in the build-up to the game.

The centre-back – who missed much of the first half of last season with a groin injury – underwent surgery after picking up an injury in the opposite groin.

Full-back Jake Carroll is suspended, young centre-back David Devine is out with a fractured cheekbone while long-term absentee David Turnbull (knee) remains on the sidelines.

Provisional St Johnstone squad: Clark, Duffy, Ralston, Tanser, Gordon, Vihmann, Kerr, Callachan, Davidson, Holt, Swanson, McCann, Wright, O'Halloran, Kane, May, Hendry, Kennedy, Wotherspoon, Booth, Parish.

Provisional Motherwell squad: Gillespie, Tait, Grimshaw, Mugabi, Gallagher, Hartley, Maguire, Donnelly, Polworth, O'Hara, Campbell, Seedorf, Hylton, Ilic, Long, Cole, Scott, Manzinga, Carson.