Kalac told the Sunday Mail: “When I first moved to Europe I had the chance to go to Celtic but ended up at Leicester – what a mistake that was!
“The reason I went was they had an Aussie coach, Mick Hickman.
“Just after I arrived the gaffer Mark McGhee ended up going to Wolves and I went with him. But there were permit problems so I returned to Leicester and played a couple of months under Martin O’Neill.
“Looking back I wish I’d gone to Celtic. I could still have been there now because there would have been no reason to leave, providing I was getting a game.”
Kalac will face a former teammate Celtic skipper Neil Lennon on Tuesday.
He said: “Neil and I lived together in Leicester. I had a house just outside the city and when he joined the club he moved in.
“We had some great times but he was a real messy so and so and I was fed up cleaning up after him.
“Neil is a quality player and very important for Celtic. He gets a hard time now and again and it takes a lot of character to come through that.”
