Kieran Tierney, a staunch defender renowned for his left back position, was born on 5th June 1997 in Scotland. Standing at 5ft 10in (1.78m) and weighing 11st 13lb (76kg), he's quite the formidable figure on the football field. Since donning the number 63 jersey, Tierney has represented his homeland as part of the Scotland national team. According to Transfermarkt, his market value is around £7.5m.
Back in July 2005, Tierney embarked on his football journey as a trainee with Celtic in the Premiership in Scotland. He first emerged on the pitch during the 2014-2015 season, with two appearances to his name. The following season saw him notch up 23 appearances and one goal. As the 2016-2017 season unfolded, Tierney replicated his form from the previous year with 24 appearances and one goal. He hit his stride during the 2017-2018 season with 32 appearances and three goals. In the succeeding season, he accumulated 21 appearances without a goal. Fast forward to the present 2025-2026 season, Tierney has already made three appearances.
In August 2019, Tierney transferred from Scotland's Celtic to England's Arsenal for a sizeable fee of approximately £25m. He made 15 appearances and scored one goal during his debut season. The 2020-2021 season witnessed him gracing the field 27 times, once again hitting the net once. During the 2021-2022 season, he followed suit with 22 appearances and another solitary goal. The 2022-2023 season saw 27 appearances without a goal, and he maintained a similar pace during the 2024-2025 season with 13 appearances and one goal.
Come August 2023, Tierney was loaned from Arsenal to Real Sociedad in Spain's LaLiga. During the loan spell, he made 20 appearances in league matches. He returned to Arsenal from Real Sociedad upon completion of his loan in July 2024.
In July 2025, Tierney made a noteworthy move, transferring from Arsenal back to his roots at Celtic in the Premiership in Scotland. At present, in the 2025-2026 season, Tierney has made three first team appearances in league matches. Details of his participation in some major tournaments include: a start in the League Cup 2025-2026 for Celtic, two starts in Euro 2024 for Scotland, five starts in the Euro Qualifiers 2022-2024 for Scotland, two starts in the Champions League Qualifiers 2025-2026 for Celtic, and two appearances as a substitute in the Nations League 2024-2025 for Scotland.
