Jaroslaw Fojut says fellow Poles Artur Boruc and Maciej Zurawski helped persuade him that his future lies with Celtic in the summer.
The 24-year-old had consulted his compatriots about their own time at Celtic Park before agreeing a switch from Slask Wroclaw.
"They were always saying good things about the club," Fojut told Celtic's official website.
"So these are the reasons I didn't think for very long before signing."
Fojut, who signed a pre-contract deal on Tuesday, said working under manager Neil Lennon, the club's fans and comments of other former Celtic players were other factors.
And he hopes that the three-year contract with the club presently sitting top of the Scottish Premier League will give him a second chance to be a success in British football.
Fojut spent several years as a teenager with Bolton Wanderers, where he first came to Lennon's attention while playing against the then Nottingham Forest midfielder for Luton Town.
He returned to his homeland five years ago and made his name with Slask Wroclaw, who were runners-up last season before knocking Dundee United out of the Europa League.
"I always wanted to play in British football and, when I was 15 and had the chance to go to Bolton, I didn't even think about it, I just packed my bags and went," said Fojut.
"Obviously, that didn't last very long and I came back to Poland to get as many games as I can.
"We nearly won the championship last season and the team are playing well, but then I got the chance to join Celtic and it was the same feeling I had when I was 15 - I didn't think about it very long.
"When there was interest from Celtic, I always had it in my mind that I would be signing for the club. It's a big move for me.
"Obviously it's a great club with a massive history. They have won many championships and, for every footballer in the world, the most important thing is to win.
"Celtic are not just one of the biggest clubs in Britain but in the world."