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17 July 2022, Switzerland, Bad Ragaz: Soccer, Borussia Dortmund training camp, day 3: Sebastien Haller speaks to journalists in the media round. (to dpa "BVB newcomer Haller feels no pressure as Haaland successor") Photo: David Inderlied/dpa (Photo by David Inderlied/picture alliance via Getty Images)

Sebastien Haller, who joined Borussia Dortmund this summer from Ajax following an exceptional 2021-22 season, was diagnosed with a testicular malignancy, the club said on Monday.


Due to sickness, the striker left the BVB training camp in Bad Ragaz, Switzerland, and returned to Dortmund for additional testing. The 28-year-old Ivory Coast international was feeling poorly after training on Monday morning, and “after intense medical investigations, a tumour in the testicles was identified,” the club announced in a statement.

“This news came as a surprise to Sebastien Haller and all of us today. The whole BVB family wishes Sebastien a speedy recovery and the opportunity to embrace him again. We will do all we can to guarantee that he receives the best possible care “Sebastian Kehl, BVB’s sporting director, stated.

Haller joined Borussia Dortmund from Ajax this summer for over €35 million and was unveiled as a new BVB player in early July. In his first full season at Ajax, Haller scored 21 goals and assisted seven more in the Eredivisie, but it was his Champions League efforts that drew the most notice, with 11 goals in only eight matches.