Oct 4 (Reuters) - Propertylink Group PLG.AX :
* Notes substantial shareholder notice lodged by ESR Pte. Ltd
* Notes that ESR has indicated it intends to keep its options open in relation to its investment in PLG
* Co is not currently aware of ESR's intentions in relation to substantial shareholding in PLG
* Is open to discussions to determine if any strategic initiatives proposed would be in best interests of PLG securityholders