Brookfield Business Partners L.P. (NYSE:BBU) is weighing a sale of Greenergy International Ltd, according to people familiar with the matter. The U.S.-listed investment firm is working with Citigroup Inc. (NYSE:C) and HSBC Holdings plc (LSE:HSBA) to gauge interest in Greenergy from potential suitors, the people said, asking not to be identified discussing confidential information. Deliberations are at an early stage, and there’s no certainty they’ll progress to a formal sale process, the people said. Representatives for Brookfield and Greenergy declined to comment, while spokespeople for Citigroup and HSBC didn’t immediately respond to requests for comment.