Corrigan recalled in the Daily Star Sunday: "Ironically, for a former City player, I once recommended Joe to West Brom when Bryan Robson was the manager and I was the club's goalkeeping coach.
"Bryan said they had heard of a young keeper at Shrewsbury, so I went to see him. That's when I first came across Joe.
"I came back with a report about a promising blond-haired kid. Robbo asked me what I thought and I said they were buying potential.
"He would have been 17 then, only a boy. I said to Bryan that, if it was me, I would put £250,000 down for him, with add-ons.
"But Robbo came back a couple of days later and said a deal for him was already signed and sealed.
"City had put £700,000 down with add-ons - and West Brom just couldn't compete with that level of fee for such a young player.
"And what a player he has proved to be."