St Johnstone have snapped up Richard Foster from Ross County to answer a defensive crisis.
The former Aberdeen and Rangers man is a contender to go straight into an injury-hit Perth backline to face Celtic.
Steven Anderson pulled up in training and, with Tam Scobbie, Keith Watson and long-term casualty Dave Mackay all out, Wright made his move for Foster who has negotiated his release from the Dingwall club.
Wright said: “Ando has picked up an injury in training so Richard will go straight into the squad for Celtic.
“We are delighted to get Richard in. He has a wealth of experience.
“He can play several positions across the back and is a player I’ve always liked so we’re looking forward to working with him”
Foster, who has signed a one-year deal, said: “It will be a baptism of fire but I am certainly match fit. I played last week for Ross County. It’s games like this that you want to be involved in.
“I had known of St Johnstone’s interest for a week or so and I got the call to say collect your stuff and get down the A9. There were other options for me but this is the one that stood out.”
