The 23-year-old grew up an avid Celtic fan and came through the club’s youth system, making 170 appearances for the first team and winning back-to-back trebles before completing a £25m move to Arsenal in the summer of 2019.
He has become a mainstay in the Gunners starting 11 under Mikael Arteta, playing his part in winning last season’s FA Cup triumph, although this season has been more difficult with the London club currently languishing in 14th place after a run of seven games without victory.
That sequence was finally broken on Boxing Day with Tierney playing a key role in the 3-1 win over Chelsea at the Emirates, drawing a foul from Reece James to earn a penalty for Arsenal’s opener, which was converted by Alexandre Lacazette.
Following the win, which eased the pressure on under-fire ex-Rangers star Arteta, Tierney took to Instagram to post a picture of his shinpads, one of which showed the Celtic badge with the initials ‘KT 63’, in reference to the number worn while at the Hoops, and other ‘KT 3’ alongside the Arsenal crest.
Tierney also posted a picture of his Arsenal team mates celebrating the victory, adding: “Solid win."
The post sparked a reply from Celtic skipper Scott Brown who messaged his former team mate, “Flying pal,” prompting Tierney to respond with two green love hearts.