Sebastien Haller, a striker for Borussia Dortmund, will receive chemotherapy for a testicular tumor and is anticipated to miss many months.
The 28-year-old forward from the Ivory Coast was diagnosed earlier this month after he complained of feeling ill.
The team announced earlier this week that he had undergone surgery satisfactorily.
Sebastian Kehl, the sporting director for Dortmund, stated that Sebastian will now receive the best care available and that his chances of recovery were excellent.
Haller, a former West Ham striker, joined the Bundesliga team last month after leaving Ajax for 31 million euros. He later agreed to a four-year contract.
Sebastien Haller (28) will be out of commission for a while, the team announced. A testicular tumor was found to be malignant based on the histology results. As a result, Haller must have chemotherapy.