Kieran Tierney is a Scottish professional footballer who plays as a left-back for the Scotland national team and currently represents Real Sociedad on loan from Arsenal. Born on June 5, 1997, in Douglas, Isle of Man, Tierney began his career at Celtic, where he won multiple domestic titles. Known for his defensive solidity and attacking contributions, he joined Arsenal in 2019. Tierney has been a key player for Scotland, earning numerous caps and representing his country in major tournaments like UEFA Euro 2020.