CAIRO: Egypt's central bank has sent investment banks a request for proposals to pitch for an advisory role in the sale of United Bank of Egypt, which the central bank owns, two sources with knowledge of the matter said.

Several big Western banks have received the request, one of the sources said. The RFP comes after talks with Saudi Arabia's sovereign wealth fund to acquire United Bank failed after disagreement over its valuation. (Reporting by Hadeel Al Sayegh and Patrick Werr; Writing by Yousef Saba; Editing by Muralikumar Anantharaman)