Celtic announced the move on Tuesday with a video of the player leaving Arsenal
The defender started Arsenal's FA Cup final victory over Chelsea in August 2020
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By BEN WILLCOCKS
Published: 10:12 EDT, 10 June 2025 | Updated: 10:14 EDT, 10 June 2025
Arsenal star Kieran Tierney has joined Celtic on a five-year deal, the Scottish club confirmed on Tuesday.
The Scotland international, who signed for Arsenal from Celtic in 2019 and went on to make over 100 appearances for the north London club, will sport the colours of green and white again next season after reaching an agreement with the Premiership giants.
Tierney joined the Gunners during Unai Emery's final summer in charge at the Emirates, signing for a reported fee of £25million.
The left-back started Arsenal's FA Cup final triumph over Chelsea in August 2020, which was postponed as a result of the Covid-19 pandemic.
However, despite being brought in as a first-choice left-back, Tierney went on to suffer a string of injuries and saw his role lessen significantly as he struggled to stay fit.
In 2022, Arteta signed Oleksandr Zinchenko from perennial champions Manchester City before again reinforcing his options in that area with the arrivals of Riccardo Calafiori and Jurrien Timber, who can play there as well as right back.
Kieran Tierney has joined Celtic on a five-year deal, leaving Arsenal on a free transfer
The star bowed out in perfect fashion with a goal for Arsenal on the final day of the season
His exit spells the end to a six-year spell at the Emirates, which was marred by several injuries
Tierney fell further down the pecking order again this campaign following the emergence of highly-rated teenager Myles Lewis-Skelly, who was one of Arsenal's brightest sparks this season.
The 28-year-old star, who began the campaign with a hamstring injury before making a full recovery last November, bowed out under perfect circumstances on the final day of the season, scoring Arsenal's opener during their 2-1 win over Southampton.
Announcing the free transfer on Tuesday, Celtic posted a video titled #BacktoParadise which showed the player travelling on public transport from Arsenal to Glasgow.
The post, which was shared via the club's official channel on X, was captioned, 'I wish I was in Glasgow,' with a music and green love heart emoji.
Despite the Scottish club's excitement over Tierney's fairytale return, there will be cause for concern given his withdrawal from the national team on Sunday.
Tierney, alongside Napoli midfielder Scott McTominay, were forced to pull out of Scotland's trip to Liechtenstein on Tuesday through injury.
Speaking ahead of the match, Scotland boss Steve Clarke said: ‘Scott and Kieran both came into camp carrying some little issues over from the season. I think if we’d had a longer turnaround between the games they might have had a chance, but this is the end of season for those two.
‘The most important thing is to have a good rest over the summer and come back flying in the autumn.’