Borussia Dortmund’s new star, Sebastian Haller, had to leave the pre-season Swiss training camp after discovering a ‘testicular tumour’, the German giants confirmed the news on their official social media pages.
The former West Ham striker Haller, arrived in a £28m deal from Ajax less than two weeks ago.
The 28-year-old Ivory Coast international complained that he was not feeling well after training on Monday morning.
A Statement on the club’s website read, “Borussia Dortmund striker Sebastian Haller had to leave the BVB training camp in Bad Ragaz, Switzerland, early due to illness and has already returned to Dortmund.
“In the course of extensive medical examinations, a tumor in the testicles was finally discovered during the day.
In the coming days, other tests will be conducted at a specialized medical center,” he added.
Sebastian Kell, sporting director of BVB, said: “This news today came as a shock to Sebastian Haller and all of us.
“The entire BVB family wishes Sebastian a full recovery as soon as possible, and we can hug him again soon.
“We will do everything we can to ensure he receives the best treatment possible.”
The statement continued: “Borussia Dortmund demands that the privacy of the player and his family be respected and that no questions are asked.
“As soon as we have more information, we will inform you in consultation with the player.”
