Gang of four vie for No 1 jerseys
While the Owls' out-of-favour Lee Grant aims to win the gloves back off Rob Burch on Saturday, Preston's Wayne Henderson is hoping to put a back injury behind him.
Burch impressed enough in the Carling Cup tie with Hartlepool to retain his place against Bristol City.
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Hide AdBoss Brian Laws said: "Rob has given me some food for thought and put Lee under pressure, which is what I want in every position."
Meanwhile if Preston's Republic of Ireland international Henderson has fully recovered from a prolapsed disc, he will challenge Andrew Lonergran for a place between the Deepdale posts on Sunday.
Henderson, aged 23, was forced to pull out of the Ireland's Euro double-header with Slovakia on Saturday and the Czech Republic tonight for a short spell in a London clinic.
The keeper travelled to the capital last week to be treated under general anaesthetic.
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Hide Ad"Apparently it isn't a pleasant procedure, so they put patients under while they do it," said Preston boss Paul Simpson.
"They use a scanning machine to pinpoint the exact spot and then they inject the disc. With Wayne it was one quite high up in his back which had gone out of line.
"The problem is something which had been troubling him for two or three weeks. He hadn't missed any training, he was managing to play on.
"But it just got to the point where it was getting slightly worse and we felt we needed to do something about it."