Kieran Tierney

Tierney was a major league figure in Celtic’s title season, making 35 Premiership appearances, including 29 starts, and scoring six goals from left back. That level of selection points to a first-choice role rather than managed involvement, while the goal return added unusual value from a defensive position. He also played across the domestic cups and Europe, taking his Celtic involvement to 53 club appearances.

Tierney’s season rating profile was strong and fairly stable, averaging 7.22 across his Premiership appearances. His peak rating of 8.63 showed he still produced high-end performances, while a lowest mark of 6.35 suggests few genuinely poor outings. For a defender with 35 league appearances, that range points to dependable form rather than volatility.

Tierney’s career path moved from Celtic academy player to £25.00m Premier League signing, then through a Real Sociedad loan before returning to Celtic at 28. The trajectory covers three senior clubs and two major leagues, with his strongest identity still tied to Celtic. His return was not a development move – it brought back an established international full back with experience in England, Spain and Europe.

The transfer history shows an early rise from Celtic trainee to Arsenal’s £25.00m signing in 2019, followed by a loan to Real Sociedad in 2023 and a free transfer back to Celtic in 2025. The free return suggested Arsenal’s valuation had fallen, but it also allowed Celtic to add a proven left back without a fee. In level terms, the moves went from Scotland to the Premier League, into La Liga on loan, then back to a dominant domestic side with European football.