US private equity firm Blackstone is to buy a majority stake in Thomson Reuters' Financial and Risk business, in a deal that would value the unit at around US$20 billion including debt, reports Reuters. The Thomson Reuters' board is expected to meet today to discuss Blackstone's offer for the business, which supplies news, data and analytics to banks and investment houses internationally. Royal Bank of Scotland has dropped its challenge to a scathing report about its restructuring unit by the UK's Financial Conduct Authority, reports the FT. RBS Chairman Sir Howard Davies told a select committee hearing that the bank believed it "was no longer useful to have an argument" with the FCA about the report into alleged "widespread and inappropriate treatment" of small business customers by the bank's Global Restructuring Group. The review will now be able to be published in full, although not until further investigation into GRG senior management is complete and individuals identified in the report given the opportunity to put their side of the story. Nathan Bostock, now CEO of Santander UK, was head of the GRG for part of the time in question, the ft reports. Just seven months after its launch, the Visa Checkout service has surpassed one million enrolled accounts in the UK, reports Finextra. The service enables online shoppers to pay with just a few clicks at registered merchant sites. Registered sites in the UK include lastminute.com, Domino's, eBuyer, Match.com and HMV. Visa's European VP of digital products William Levaggi said sites offering the service saw reduced online basket abandonment. Fitch Ratings has sold its stake in a Chinese joint venture, suggesting it is planning a solo debut into the Chinese market following regulatory changes, reports Caixin. Beijing has vowed to open China's credit rating sector to foreign players, removing the cap on majority foreign ownership for players in the securities, insurance and banking sectors. Fitch ditched its 49 per cent stake in China Lianhe Credit Rating Co for an undisclosed sum. Bitcoin continues its rollercoaster ride, dropping back under US$10,000 for the second time in a fortnight, reports CNBC. The 20 largest digital currencies all fell at the same time. In total, Bitcoin is down about 28 per cent this month.