Kieran Tierney has completed a loan exit from Arsenal to join Real Sociedad.
The Scotland international agreed a season-long loan switch to the La Liga side.
However, there is no option to buy in the agreement between the Champions League clubs.
Instead, Tierney will spend the season on loan at Sociedad before returning to Arsenal at the end of the season.
The move comes after Tierney's game time at Arsenal was limited with the former Celtic defender left out of the matchday squad for the opening three Premier League fixtures.
An Arsenal statement on the club website confirmed: "Kieran Tierney has joined LaLiga side Real Sociedad on loan for the 2023/24 season.
"Scotland international defender Kieran joined us in August 2019 from Celtic and during his time with us has made 124 appearances in all competitions.
"The 26 year-old enjoyed success in his first season with us, finishing the campaign scoring his first Arsenal goal in our 3-2 home win against Watford on the final day of the Premier League campaign. This was followed days later with Kieran starting in our 2-1 FA Cup Final win over Chelsea at Wembley Stadium, playing an integral role in the club lifting the FA Cup for a record fourteenth time.
"During his four seasons with us, Kieran also featured in our FA Community Shield winning teams in both 2020 over Liverpool and the recent Wembley victory over Manchester City.
"Before joining us, Kieran enjoyed huge success at boyhood club Celtic, winning four league titles, two Scottish FA Cups and two Scottish League Cups in a four-year spell after making his debut as a 17-year-old. He was named PFA Scotland Young Player of Year for three consecutive seasons in 2016, 2017 and 2018.
"Kieran is a regular with the Scotland national team and currently has 39 international caps for his country.
"Everyone at Arsenal wishes Kieran all the best this coming season with Real Sociedad.
"The loan deal is subject to the completion of regulatory processes."