Yes, the PIO can sell the property acquired by him to a resident Indian. However, the repatriation of funds received from such sale to any place out of India would depend on the relevant rules and regulations in connection therewith.
1.From the balances of NRO account – subject to declaration
2. Sale proceeds of assets
3. Assets acquired from legacy/ inheritance/ deed of settlement
they can remit up to USD 1 Million in a financial year