Adani Finserve, KKR, Piramal Finance and Poonawalla Finance are among the 14 prominent firms that have expressed interest in buying debt-ridden Reliance Capital promoted by Anil Ambani's Reliance Group, PTI reported on Sunday. The last date for submission of bids for the firm was extended to March 25. Last year, RBI superseded Reliance Capital's board in view of payment defaults.