K. Tierney

Kieran Tierney (born 5 June 1997) is a Scottish professional footballer who plays as a left-back for Scottish Premiership club Celtic and the Scotland national team. Tierney came through the Celtic youth system and made his first-team debut in April 2015. After playing 170 games for the club, he joined Premier League side Arsenal in August 2019 for a fee reported at £25 million. After six years with Arsenal, including one on loan with La Liga club Real Sociedad, Tierney returned to Celtic in June 2025. He made his Scotland international debut in March 2016, and has since made more than 50 appearances for the senior side.

Early life and youth football Kieran Tierney was born on 5 June 1997 in Douglas on the Isle of Man, and moved to Wishaw in Scotland aged 10 months. He supported Celtic as a child and signed for the club when he was seven years old.