Emerging markets telecoms group Vimpelcom wants to delist Cairo-based subsidiary Orascom Telecom Holding (OTH) (ORTE.CA) from the Egyptian and London stock exchanges so it can manage it directly, two sources said on Friday. The move will also allow Vimpelcom to cut costs associated with running the Egyptian office and avoid regulatory and political risks, a source familiar with Vimpelcom's plans and a source close to Vimpelcom said. Vimpelcom acquired a controlling stake in OTH in 2011 along with 100 percent in Italy's Wind from Egyptian tycoon Naguib Sawiris in a $6 billion-plus deal, expanding outside its Russian home market. Together with subsidiaries, Vimpelcom owns 51.92 percent of OTH, which has mobile businesses in Canada, Algeria and other emerging markets such as Bangladesh. The purchase of Wind and Orascom, which was overshadowed by a bitter shareholder dispute at Vimpelcom, saddled the company with heavy debts and prompted it to launch a strategic review of the assets.

Yahoo Inc's board will meet on Sunday to vote on whether to offer $1.1 billion in cash for New York-based blogging service Tumblr, tech blog AllThingsD cited sources close to the situation as saying on Friday. Such an acquisition would be CEO Marissa Mayer's largest deal since taking the helm of the once-iconic Internet company in July 2012. Yahoo is keen on Tumblr because its younger user base would enhance the older website's "cool factor," the technology blog cited the sources as saying. The news could be announced as soon as Monday, it said. Yahoo has invited press to an event in Manhattan at which it promised to "share something special," without elaborating. Mayer, who spent 13 years at Google Inc, is trying to revitalize a former Internet powerhouse that in recent years has struggled with declining business. On its home page, Tumblr says it hosts 108 million blogs, with 50.7 billion posts between them. Yahoo declined to comment, while Tumblr did not respond to requests for comment.