He has had to contest the number 1 shirt with players such as Alan Fettis and Roy Carroll, but still managed to tally up over 200 appearances in all competitions over the years.
His finest hour was probably at Selhurst Park in September 1997, the year he had his longest run in the side. City went to Crystal Palace carrying a 1-0 lead from the first leg, and thanks to some outstanding saves against the then Premiership side Willo helped City progress to the Third Round of the Coca-Cola Cup, where we played Newcastle at St. James' Park.
With the arrival of Paul Musselwhite he was eventually forced out, and made one appearance on loan for Macclesfield before his City contract ran out last summer and was released after 10 years at the club.
He joined the Silkmen on a free transfer in September, and has already made 31 appearances for them.
He returns to Boothferry Park on Friday with his new side, and is expected to come back again at the end of the season for a testimonial, belatedly rewarding him for 10 years' service.
The 27-year-old, Hull-born shot-stopper said: "It's going to be a great night for me and coming back is bound to be emotional but I'm really looking forward to it.
"I'm hoping Middlesborough will be the opposition but they are still in the FA Cup and much depends on how they do in that competition."
The game has been pencilled in for May 3rd - two days after the Play-offs 2nd leg and a week before the Final. Ex-Tiger Steve McClaren, who now manages 'Boro, will bring his side to Boothferry Park. Fellow ex-Tiger Dean Windass is almost certain to play, while City fans may get to see England internationals Paul Ince, Gareth Southgate and Ugo Ehiogu grace the Boothferry pitch.