![Squawka Live on Twitter: "DONE DEAL: Borussia Dortmund have confirmed the signing of 17-year-old Alexander Isak from AIK on a long-term deal for an undisclosed fee. https://t.co/jgK6y1GBLQ" / Twitter Squawka Live on Twitter: "DONE DEAL: Borussia Dortmund have confirmed the signing of 17-year-old Alexander Isak from AIK on a long-term deal for an undisclosed fee. https://t.co/jgK6y1GBLQ" / Twitter](https://pbs.twimg.com/media/C22cpSqWIAAqOir.jpg)
Squawka Live on Twitter: "DONE DEAL: Borussia Dortmund have confirmed the signing of 17-year-old Alexander Isak from AIK on a long-term deal for an undisclosed fee. https://t.co/jgK6y1GBLQ" / Twitter
![Football news - Erling Haaland's Man City move helped by Alexander Isak buyback clause - reports - Eurosport Football news - Erling Haaland's Man City move helped by Alexander Isak buyback clause - reports - Eurosport](https://imgresizer.eurosport.com/unsafe/1200x0/filters:format(jpeg)/origin-imgresizer.eurosport.com/2021/05/01/3124366-64043048-2560-1440.jpg)
Football news - Erling Haaland's Man City move helped by Alexander Isak buyback clause - reports - Eurosport
![Don't call him the new Ibrahimovic! Alexander Isak - the Swede who rejected Real Madrid for Dortmund | Goal.com US Don't call him the new Ibrahimovic! Alexander Isak - the Swede who rejected Real Madrid for Dortmund | Goal.com US](https://assets.goal.com/v3/assets/bltcc7a7ffd2fbf71f5/blt6afc5595e5c5cc73/60df803eed354a206edd0942/ccab199b46baf2c2a377bb656f80376f6b20b440.jpg)
Don't call him the new Ibrahimovic! Alexander Isak - the Swede who rejected Real Madrid for Dortmund | Goal.com US
![Real Sociedad in negotiations to buy back Borussia Dortmund's buy-back clause in Alexander Isak's contract - Football España Real Sociedad in negotiations to buy back Borussia Dortmund's buy-back clause in Alexander Isak's contract - Football España](https://icdn.football-espana.net/wp-content/uploads/2021/06/1003022031.jpg)
Real Sociedad in negotiations to buy back Borussia Dortmund's buy-back clause in Alexander Isak's contract - Football España
![Dortmund signing Alexander Isak confirms them as the go-to destination for Europe's best young players | The Independent | The Independent Dortmund signing Alexander Isak confirms them as the go-to destination for Europe's best young players | The Independent | The Independent](https://static.independent.co.uk/s3fs-public/thumbnails/image/2017/01/23/11/isak.jpg)
Dortmund signing Alexander Isak confirms them as the go-to destination for Europe's best young players | The Independent | The Independent
![Borussia Dortmund on Twitter: "BVB has agreed to terms on the transfer of Alexander Isak with @RealSociedadEN 📝 We wish Alex the best of luck in his new journey and thank him Borussia Dortmund on Twitter: "BVB has agreed to terms on the transfer of Alexander Isak with @RealSociedadEN 📝 We wish Alex the best of luck in his new journey and thank him](https://pbs.twimg.com/media/D83PPeVW4AEKct3.jpg)
Borussia Dortmund on Twitter: "BVB has agreed to terms on the transfer of Alexander Isak with @RealSociedadEN 📝 We wish Alex the best of luck in his new journey and thank him
![Dortmund, Deutschland. 10th Aug, 2018. Alexander ISAK (DO), half figure, half figure, portrait format, football 1. Dortmund, Deutschland. 10th Aug, 2018. Alexander ISAK (DO), half figure, half figure, portrait format, football 1.](https://c8.alamy.com/comp/PEBANA/dortmund-deutschland-10th-aug-2018-alexander-isak-do-half-figure-half-figure-portrait-format-football-1-bundesliga-borussia-dortmund-do-press-date-on-10082018-in-dortmundgermany-usage-worldwide-credit-dpaalamy-live-news-PEBANA.jpg)
Dortmund, Deutschland. 10th Aug, 2018. Alexander ISAK (DO), half figure, half figure, portrait format, football 1.
![Klart: Alexander Isak lämnar AIK och fotbollsallsvenskan och går till Borussia Dortmund i tyska Bundesliga - Radiosporten | Sveriges Radio Klart: Alexander Isak lämnar AIK och fotbollsallsvenskan och går till Borussia Dortmund i tyska Bundesliga - Radiosporten | Sveriges Radio](https://static-cdn.sr.se/images/179/811fe0d8-5e00-41fa-be53-c5834f93c7c8.jpg)
Klart: Alexander Isak lämnar AIK och fotbollsallsvenskan och går till Borussia Dortmund i tyska Bundesliga - Radiosporten | Sveriges Radio
![Real Sociedad Confirm Signing of Alexander Isak From Borussia Dortmund on 5-Year Deal - Sports Illustrated Real Sociedad Confirm Signing of Alexander Isak From Borussia Dortmund on 5-Year Deal - Sports Illustrated](https://www.si.com/.image/ar_1:1%2Cc_fill%2Ccs_srgb%2Cfl_progressive%2Cq_auto:good%2Cw_1200/MTY4MDA3OTQ0MzEyNTk1NzI5/borussia-dortmund-team-presentation-5d00faf5c0420b4349000001jpg.jpg)
Real Sociedad Confirm Signing of Alexander Isak From Borussia Dortmund on 5-Year Deal - Sports Illustrated
![Borussia Dortmund beat Real Madrid to €10m signing of Swedish wonderkid Alexander Isak | Transfer window | The Guardian Borussia Dortmund beat Real Madrid to €10m signing of Swedish wonderkid Alexander Isak | Transfer window | The Guardian](https://i.guim.co.uk/img/media/0011f9df3ffc242720a9b7fb6dc46b4df3055d5f/0_114_5349_3209/master/5349.jpg?width=1200&height=1200&quality=85&auto=format&fit=crop&s=574cb684681a4b9516f3236dd7212bb0)