(Adds Telefonica SA, Air Canada ; updates Tencent)
May 1 (Reuters) - The following bids, mergers, acquisitions and disposals were reported by 2000 GMT on Friday:
** Spain's Telefonica SA TEF.MC is in talks with billionaire John Malone's Liberty Global Plc LBTYA.O to explore a merger of its British mobile operator O2 with cable network company Virgin Media, two sources familiar with the matter said. Air Canada's AC.TO C$720 million ($517 million) purchase of tour operator Transat AT TRZ.TO is fuelling jitters among some investors who would like to see the deal renegotiated with the aviation industry in turmoil due to COVID-19, two sources familiar with the matter told Reuters. Chinese gaming and social media group Tencent Holdings 0700.HK has bought a 5% stake in Afterpay Ltd APT.AX , the Australian buy-now-pay-later firm said. A body overseeing web addresses said it has vetoed a $1.1 billion deal to sell control of domain names ending in .org to a private investment firm after an outcry from internet pioneers and officials including California's attorney general. Moderna Inc MRNA.O and Swiss contract drugmaker Lonza Group AG LONN.S said they would accelerate the manufacturing of the U.S. drug developer's potential coronavirus vaccine. Australia's top power and gas retailer, Origin Energy ORG.AX , agreed to buy a 20% stake in UK retailer Octopus Energy for A$507 million ($327 million), with an exclusive license to use its technology in Australia, the companies said. Mediobanca MDBI.MI has dropped plans to buy a stake in Indonesia's consumer credit operator BFI Finance BFIN.JK because the COVID-19 emergency had made the deal "unrealistic", the Italian financial group said. Lufthansa LHAG.DE is negotiating a 10 billion euro ($10.98 billion) bailout that would result in Germany taking a 25.1% stake in the airline, weekly paper Der Spiegel said. Oilfield services provider Baker Hughes Co BKR.N agreed to sell its Lufkin rod lift unit to private equity fund manager KPS Capital Partners for an undisclosed amount.