Former Preston physio Mick Rathbone thinks Iain Turner would be a good replacement for goalkeeper Andrew Lonergan, who has joined Leeds.
Turner, 27, spent three months of last season on loan at Deepdale and is available on a free transfer after leaving Everton.
Rathbone told BBC Radio Lancashire: "I rate him very highly.
"He's been on loan at a number of clubs and done fantastically well. I'm amazed he isn't fixed up by now."
Rathbone has worked closely with both Lonergan and Turner after spells as physio with Preston and Everton and is currently part of the Coventry City coaching staff.
He said: "Turner is a fantastic goalkeeper. That's not saying he's better than Andy. Both are very very good goalkeepers.
"I remember doing Iain's medical when he came down from Stirling Albion at the age of 17. He was a lovely young guy.
"As he did better and better and got in and around the first time and achieved Scottish honours he never changed."
After 11 seasons with Preston, Rathbone does admit that it is the right time for Lonergan to pursue a new challenge.
"I think they are as good as each other but if you are bringing new freshness in even better," he said.
"Iain Turner would be a fantastic signing for Preston North End and I think he'll go on to be Scotland's number one."