Meanwhile, there are four changes for the home side as they try to put their cup defeat to Queen of the South behind them.
David Wotherspoon is suspended for the visit of the champions, but Lee Croft is available again, while Chris Millar and Steven MacLean are back from injuries, and Michael O'Halloran is included up front.
St Johnstone: Mannus, Mackay, Scobbie, Anderson, Easton, Lappin, Millar, Davidson, Croft, O'Halloran, MacLean
Subs: Banks, Wright, Graham, Caddis, McFadden, Miller, Kane
Celtic: Gordon, Matthews, Denayer, Van Dijk, Izaguirre, Brown, Bitton, Mackay-Steven, Johansen, Armstrong, Griffiths
Subs: Zaluska, Ambrose, Henderson, Guidetti, Stokes, Scepovic, McGregor