Greek international football star Vangelis Moras was admitted into hospital on Monday to join brother Dimitri to begin donating lifesaving bone marrow to give his brother a chance at recovery.
Dimitris flew to Australia in March to visit his cousins but fell ill a week after his arrival, and was diagnosed with Acute Myeloid Leukemia.
The 33-year-old Dimitris was advised that flying back to Greece was too risky, and started immediate treatment at Alfred Hospital.
He has been in the Alfred Hospital since March.
Vangelis is set to return to Italy next week.