March 29 (Reuters) - Prospect Park Capital Corp PPK.V
* Says advised by Serenity Pharmaceuticals co will not receive milestone payment which it held onto upon sale of interest in IOI
* Says prospect park's final return on its investment in IOI remains at 8%.
* Will not receive payment in light of Allergan (NYSE:AGN) exercising unilateral right to terminate license, transfer, development agreement with Serenity Source text for Eikon: Further company coverage: PPK.V