Born on 5th June 1997, Kieran Tierney is a Scottish footballer best known for his robust defensive skills as a left back. Standing 5ft 10inches tall (1.78m) and weighing 11st 13lb (76kg), the number 63 jersey wearer has not only made his mark at Celtic but has also turned heads in the broader Scottish national team.
Presently, Tierney possesses a market value within the region of £6.8m as was deduced by Transfermarkt.
His professional journey dates back to July 2005 when he joined Celtic F.C as a trainee. His breakthrough came almost a decade later in the 2014-2015 season where he made two first team appearances in league matches. The subsequent years saw his steady rise and impact within the team, with stand-out seasons being the 2017-2018 and 2025-2026 seasons, where he made 32 and 28 first team appearances and scored three and five goals respectively, marking his importance in the Celtic squad.
His performances drew attention from the English Premier League and he transferred to Arsenal in August 2019 for a fee around £25m. The 2019 - 2020 season also saw him take his skills overseas for the first time, making 15 first team appearances and netting one goal. Tierney's performance was notably consistent over the next four seasons, with the 2020 - 2021 and 2022 - 2023 seasons proving particularly productive with 27 first team appearances each.
August 2023 brought another milestone as Tierney took his talents to Spain, joining Real Sociedad in LaLiga on loan. Here, he made a total of 20 first team appearances in the 2023 - 2024 season. Tierney returned to Arsenal in July 2024, remaining consistent in his performance and appearances.
In July 2025, Tierney made a triumphant return to Celtic where he currently continues his professional journey. This season, he has made 28 first team appearances, proving that his experience abroad has only added to his strength and skill within the Celtic team.
Beyond his league matches, Tierney showed his versatility by participating in various tournaments. This includes the League Cup 2025 - 2026 for Celtic with three starts and one substitute appearance, Scottish Cup 2025 - 2026 for Celtic with one start, World Cup Qualifiers Europe 2024 - 2026 for Scotland, scoring one goal in three substitute appearances, Champions League Qualifiers 2025 - 2026 for Celtic with two starts, and Europa League 2025 - 2026 for Celtic with nine starts.
Overall, Tierney's career has demonstrated a commendable level of consistency, versatility and resilience that showcases the quintessential attributes of not only a Celtic player, but a profound ambassador of Scottish football.
