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Borussia Dortmund said striker Sebastien Haller has left their pre-season training camp in Switzerland after a tumour was found in his testicle. Ivory Coast's Haller joined the German club earlier this month as a replacement for Erling Haaland, who has signed for Manchester City. Image Credit: AFP

New Borussia Dortmund signing Sebastien Haller has left their training camp after a tumour was discovered in his testicle, the Bundesliga club said on Monday.

The 28-year-old Ivory Coast international travelled back to Dortmund to undergo medical tests after feeling unwell.

Shocking news

“This news today came as a shock to Sebastien Haller and to all of us,” said BVB sporting director Sebastian Kehl.

“We will do everything in our power to ensure that he receives the best possible treatment.” The club said Haller will be absent for an indefinite period.

Haller joined Dortmund from Dutch side Ajax Amsterdam on a four-year contract earlier this month.