The Scotland international was an instant hit at the Emirates after joining from Celtic in the summer of 2019, where he would fill the void left by the long-serving Nacho Monreal.
Tierney proved his value to Mikel Arteta when fit, but injuries have hampered the defender's time in North London, and he fell below Oleksandr Zinchenko in the pecking order for the 2022-23 season.
With Takehiro Tomiyasu, Jakub Kiwior and new signing Jurrien Timber — currently out with an ACL problem — also capable of playing at left-back, Tierney departed for Sociedad on loan for the 2023-24 campaign.
The 26-year-old's injury woes have reared their ugly heads again during his time in Spain, where he has set up one goal in 16 matches across all competitions, but he has earned 10 La Liga starts under Imanol Alguacil when available.
Sociedad do not possess an option or obligation to sign Tierney on a permanent deal, meaning that the Scotsman is due to return to Arsenal — where he is under contract until 2026 — this summer.
Speaking to the Daily Mail, Tierney confessed that he was not sure what the future held for him in North London but spoke of his admiration for Sociedad, whom he has vowed to repay for their «faith» in him.
«It's hard to say. I loved my time there and I still have two years on the contract. I am very grateful to Arsenal. I don't know what's going to happen but I am absolutely loving it here,» Tierney said.
«I feel I have adapted quite well and I hope I can return the faith the club have shown. This is a very, very talented squad
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