Team news ahead of Saturday's Scottish Premier League clash between St Johnstone and Celtic at McDiarmid Park (kick-off 12.30pm).
St Johnstone manager Steve Lomas is "keeping his fingers crossed" that no more players are taken ill before the game.
The Northern Irishman had seven players missing with a virus on Thursday and while he was reluctant to say how many had recovered, he is hoping that "not too many are missing."
Defender Callum Davidson has a knock and he too will be assessed in the morning.
Celtic skipper Scott Brown will make his first start of the season.
The midfielder is nursing an ongoing hip problem which has restricted his appearance to European games but comes back in along with defender Charlie Mulgrew, who has recovered from an Achilles injury.
Forward Georgios Samaras is out with an elbow injury picked up on international duty with Greece, strikers Lassad Nouioui and Miku and goalkeeper Lubos Kamenar are in contention but defender Efe Ambrose has yet to return from international duty with Nigeria.
St Johnstone (from): Mannus, C Davidson, Wright, MacKay, Anderson, Cregg, Pawlett, Craig, M Davidson, Vine, Tade, Hasselbaink, Higgins, Adams, Miller, Caddis, Tuffey, Rodger.
Celtic (from): Forster, Matthews, Lustig, Wilson, Mulgrew, Izaguirre, Rogne, Forrest, Commons, Brown, Wanyama, Twardzik, McCourt,
Hooper, Keatings, Lassad, Miku, Kamenar, Zaluska, Chalmers, Watt, George.