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Passant, 18, signed his first professional contract with the Football League One club in May, and has been with the Linnets during pre-season.
He was on the bench for four cup ties for Tranmere last season, including their home FA Cup tie against Tottenham Hotspur.
Linnets manager Michael Ellison said: "Bayleigh came into our pre season friendly against FC United and really impressed.
"He's a great shot stopper, has really good feet and has a really good head on his shoulders for a young lad.
"He's at the stage in his career, where needs first-team football and he will certainly get that at Runcorn.
"I've no doubt he's got a bright future ahead of him and I'm looking forward to working with him."
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