(Adds AT&T, Uchumi Supermarkets, Stada, Enel and Novartis ; updates Sanofi)
May 25 (Reuters) - The following bids, mergers, acquisitions and disposals were reported by 1600 GMT on Wednesday:
** French drugmaker Sanofi SASY.PA named eight candidates to replace the entire board of Medivation Inc MDVN.O on Wednesday, stepping up pressure on the U.S. cancer drug company which has rejected its $9.3 billion takeover approach. AT&T Inc (NYSE:T) T.N , the No. 2 U.S. wireless carrier, has made a bid for Yahoo Inc's YHOO.O internet business, Bloomberg reported, citing people familiar with the matter. Kenya's Uchumi Supermarkets Ltd UCHM.NR has attracted "many suitors" in its search for a major new investor and its board is evaluating bids from both local and foreign parties, its chief executive said. German generic drugmaker Stada STAGn.DE has held informal talks with private equity firm CVC Capital Partners CVC.UL over a potential buyout, The Wall Street Journal reported. The board of Italian state lender Cassa Depositi e Prestiti (CDP) has mandated its managers to start exclusive talks with Enel ENEI.MI over the sale of fibre-optic group Metroweb, a source close to the matter said. Swiss drugmaker Novartis AG NOVN.S is ready to sell its near $14 billion stake in rival Roche Holding AG ROG.S without demanding a premium, Chief Executive Joe Jimenez said. Hewlett Packard Enterprise Co HPE.N said it would spin off and merge its struggling IT services business with Computer Sciences Corp (NYSE:CSC) CSC.N , allowing the company to focus on its cloud services business and other fast-growing units. Toyota Motor Corp 7203.T said it would invest in on-demand ride-hailing company Uber UBER.UL , the latest in a wave of high-profile moves by automakers to embrace their potential upstart rivals as partners, customers and sources of valuable data. Chinese sportswear maker Peak Sport Products 1968.HK , which has several U.S. basketball sponsorship and endorsement deals, said it may be taken private and delist from Hong Kong, joining a growing queue of mainland firms looking to exit the city's stock market. The Singapore Exchange (SGX) SGXL.SI is in exclusive talks with the London's Baltic Exchange about buying the centuries-old shipping industry hub, sources said. More than 90 percent of Norwegian online browser and advertising company Opera Software's OPERA.OL shareholders have backed a Chinese consortium's $1.24 billion takeover bid, clearing a big hurdle for the deal to go ahead, the buyers said. Australia's Telstra Corp Ltd TLS.AX said its $1.6 billion sale of a controlling stake in Chinese website operator Autohome Inc ATHM.N to Ping An Insurance Group Co of China Ltd 601318.SS is being challenged by minority shareholders. CMA CGM CMACG.UL , the world's third-largest container shipping firm, is to go ahead with its planned acquisition of Singapore's Neptune Orient Lines (NOL) NEPS.SI after receiving regulatory clearance from China, the French group said. Indonesia's oil and gas company PT Pertamina will sign a framework agreement with Russia's largest oil producer Rosneft ROSN.MM on Thursday for the Tuban refinery project, Pertamina's spokeswoman Wianda Pusponegoro told Reuters.