![Sebastien Haller scored 21 league goals as Ajax won the 2021/22 Dutch Eredivisie before his summer move to Borussia Dortmund. EPA](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/TLLMI4VZSEMAMFXLSDCNSFG6G4.jpg?smart=true&auth=8e3570cfeefd05b0dccfd8752f8873446611aa37345b191f9e775646b1edd26a&width=400&height=225)
Sebastien Haller scored 21 league goals as Ajax won the 2021/22 Dutch Eredivisie before his summer move to Borussia Dortmund. EPA
Sebastien Haller scored 21 league goals as Ajax won the 2021/22 Dutch Eredivisie before his summer move to Borussia Dortmund. EPA
Sebastien Haller: Dortmund rally behind striker after discovery of testicular tumour
'We will do everything in our power to ensure that he receives the best possible treatment'