West Ham United can confirm striker Dylan Tombides is being treated for testicular cancer.
The 17-year-old was diagnosed while away on international duty last month with Australia at the FIFA U-17 World Cup in Mexico.
Dylan immediately returned to England and the club's medical staff arranged for a further assessment by doctors.
He has already started his first course of chemotherapy at St Bartholomew's Hospital in London, which is the standard treatment for his condition. He has since returned home to rest and will continue further treatment in the coming weeks.
Club doctor Sean Howlett said: "Dylan is receiving the best possible care. All the doctors involved have advised Dylan that he will make a full recovery in terms of his illness and his ability to return to his football career.
"He is undergoing the standard series of treatments for his condition which is a course of chemotherapy."
Dylan and his family are in constant contact with his team-mates, coaches and support staff. The Academy player of the year is also aiming to visit them as soon as possible, including for the squad's annual team photo.
Academy director Tony Carr said: "Everyone at the club is right behind Dylan and we all wish him a speedy and healthy recovery. The doctors are all very positive and he is in the best possible hands. We look forward to seeing him back with us when he is ready."