Deals of the day-Mergers and acquisitions

June 25 (Reuters) - The following bids, mergers, acquisitions and disposals were reported by 0930 GMT on Wednesday:

** UK's Warehouse REIT accepted a 485.2 million pound ($661 million) takeover offer from Tritax Big Box REIT , walking away from a previous deal with Blackstone agreed in early June. nL4N3SS0JF

** French state-owned utility EDF's new chief is considering a sale of some assets as part of a review of the firm's portfolio in a bid to meet government demands to spur investments in new nuclear reactors, the Financial Times reported on Wednesday. nL4N3SS0PR

** Spain's BBVA BBVA.MC is considering whether to go ahead with its bid for Sabadell SABE.MC after conditions imposed by the Spanish government on the deal and will reassess the impact on its estimated cost savings, the bank's country manager for Spain said on Wednesday. nL8N3SS0FN

** New Zealand accounting software giant Xero agreed to buy New York payments provider Melio for $2.5 billion, the companies said, accelerating the Kiwi firm's push into the U.S. with the country's biggest outbound deal in over a decade. nL4N3SR1OJ

** Monte dei Paschi di Siena BMPS.MI said on Wednesday the European Central Bank had approved its proposed acquisition of rival Mediobanca MDBI.MI, including under a scenario in which it gains a stake of less than 50% in the rival. nL1N3SS06L

** Brighthouse Financial BHF.O has narrowed down a field of suitors to money manager TPG and Abu Dhabi-backed financial investor Aquarian Holdings, as the U.S. life insurance and annuity provider continues to explore a potential sale, according to people familiar with the matter. nL1N3SR0VX