(Reuters) - Greece would receive an initial payment of 23 billion euros (16.35 billion pounds) later this month under a new three-year bailout package from its euro zone partners, a source familiar with the financial plan told Reuters. The source, who requested anonymity, said the package totalled 91.7 billion euros, including 85.5 billion euros in aid and an estimated 6.2 billion euros in privatisation revenues through 2018.