(Adds Papa John, Twenty-First Century Fox, Chevron, Alexion Pharmaceuticals)
Sept 26 (Reuters) - The following bids, mergers, acquisitions and disposals were reported by 2000 GMT on Wednesday:
** Papa John's International Inc, the world's third-largest pizza delivery company, has reached out to potential acquirers to ask them to submit offers, people familiar with the matter said.
** Twenty-First Century Fox Inc agreed to sell its 39 percent stake in Sky Plc to Comcast Corp, the companies said, a deal that completes the U.S. cable group's takeover and ends Rupert Murdoch's relationship with the UK-based satellite broadcaster.
** U.S. oil group Chevron has a potential buyer for its stake in one of the UK North Sea's biggest oil and gas developments, a company spokeswoman said.
** Alexion Pharmaceuticals Inc said it would buy privately held biotech company Syntimmune for a total value of up to $1.2 billion, bolstering its portfolio of drugs to treat rare disorders.
** Hong Kong-based private equity group PAG said a unit of the firm had launched a HK$5.24 billion ($671 million) unsolicited takeover bid for Spring Real Estate Investment Trust (REIT).
** Anbang Insurance Group Co Ltd aims to sell $200 million worth of Japanese real estate to bidders including Blackstone Group LP, about two years after buying them from the U.S. investment firm, two people with knowledge of the matter said.
** Deutsche Bank has dismissed as "fictions" speculation that it might seek a merger, after media reports suggested Germany's biggest lender might seek tie ups with Switzerland's UBS or German peer Commerzbank. (Compiled by John Benny and Bharath Manjesh in Bengaluru)