The 22-year-old was already a Celtic legend by the time that he left.
Kieran Tierney has revealed to The Scottish Sun he believes that he has forever burned his bridges with some Celtic fans.
Tierney quit the Hoops in August to join Arsenal in a £25 million deal.
The 22-year-old broke into Celtic’s senior side as a teenager during the 2015-16 campaign and established himself as one of the best young left-backs in Europe.
The Arsenal defender also once claimed that he never wanted to leave Glasgow, such is his affinity for his boyhood club.
And Tierney is well aware that some fans of the Parkhead club might never forgive him for leaving.
He told The Scottish Sun: “I don’t know if it will pass, some fans probably won’t ever forgive me. Everyone has their choice, some people will support me and others won’t.
“I just want to say thanks to everyone who supported me at Celtic. I couldn’t have got the move to Arsenal without their support and love. I gave Celtic 15 years. I put my body through a lot by playing through injuries.
“I gave everything I could every single day. Hopefully they will continue to support me but, if not, I just have to deal with that.”
Tierney, who doesn’t turn 23 until June, was already a Celtic legend by the time he left, having helped the club to win three successive domestic trebles under Brendan Rodgers and later Neil Lennon.
And it’s very unfortunate if some supporters of the Parkhead faithful have turned on him forever, even though the anger might be borne out of the love that they had for him.
But had you told Bhoys fans four years ago that one of their Lennoxtown products would eventually sell for £25 million – a record amount paid to a Scottish club – then they might have taken it.