Kieran Tierney, a burly defender standing at 5ft 10in (1.78m) and weighing 11st 13lb (76kg), was born on 5 June 1997 in Scotland. With the number 63 emblazoned on his back, Tierney has primarily played as a left back since his days as a trainee at Celtic in July 2005 and has also patriotically served the Scottish national team.
His debut season in 2014-2015 for Celtic was, by all appearances, a baptism by fire, with him making only two first-team appearances in league matches. However, he began to gain momentum during the 2015 - 2016 season, making 23 first team appearances and scoring his first goal in league matches.
As time advanced and with it Tierney's skills, he went on to score a total of five goals for Celtic during his first stint, consistently making between 21 to 32 appearances per season. His value on the field is estimated at a hair over £7m according to Transfermarkt.
Seeking a new challenge, Tierney transferred from Celtic to Arsenal in August 2019. The departure was not without its silver lining, however, as the move reportedly netted Celtic a tidy £25m. At Arsenal, Tierney continued to be a regular fixture, amassing between 13 to 27 appearances per season and adding four more goals to his tally.
Switching arenas again in August 2023, Tierney traded England's Premier League for Spain's LaLiga, joining Real Sociedad on a loan. Yet Spain's sun did not shine as brightly for Tierney as it had in his homeland. After making 20 first team appearances in the 2023 - 2024 season, Tierney returned to the Premier League upon completion of his loan.
In July 2025, the prodigal son returned. Tierney transferred back to Celtic where he hit the ground running, making 15 first team appearances and scoring three goals in the current 2025 - 2026 season. He also made his mark in other competitions including the League Cup and Champions League Qualifiers.
On the international stage, Tierney has consequently represented Scotland in the Euro 2024 and Euro Qualifiers from 2022 - 2024, as well as the World Cup Qualifiers Europe from 2024 - 2026. In these international appearances, he has shown his mettle and exerted his influence on the pitch, with one goal making its way to the back of the net.
