Deals of the day-Mergers and acquisitions

Adds: Mediobanca Updates: Snam

Jan 28 (Reuters) - The following bids, mergers, acquisitions and disposals were reported by 1430 GMT on Tuesday:

Italian bank Mediobanca MDBI.MI rejected a takeover offer by state-backed rival Monte dei Paschi di Siena BMPS.MI, saying a tie-up would be detrimental to its shareholders because it lacked any strategic and financial rationale.

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Italian gas grid operator Snam SRG.MI will sell its minority stake indirectly held in ADNOC Gas Pipelines to Abu Dhabi-based investment fund Lunate, Snam said.

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Pan-European stock exchange Euronext ENX.PA announced it would acquire Nasdaq's NDAQ.O Nordic power futures activities, as it seeks to widen its business in the northern European electricity market. nL2N3OO07N

Dutch bank ING Groep INGA.AS said it had reached an agreement to sell its business in Russia to local company Global Development JSC, leaving the bank with an exposure of 1 billion euros ($1.04 billion). nL2N3OO06Z

German airline group Lufthansa LHAG.DE is in talks with Spanish carrier Air Europa about the possibility of acquiring a minority stake, according to two sources with knowledge of the talks. nL2N3OO09C

Blue Pool, a Hong Kong-based investment firm backed by Alibaba co-founder Joe Tsai, has bought a 12% stake in Italian luxury sneaker makerGolden Goose, the Venice-based brand said. nL5N3OO0FC

Tiger Brands TBSJ.J, South Africa's biggest food producer, said it would sell its 24.4% stake in food producer Empresas Carozzi back to Chilean parent Carozzi CAROZZI.SN for $240 million to focus on its domestic business. nL6N3OO03Y

Billionaire Brad Jacobs took his QXO QXO.N $11 billion takeover offer for Beacon Roofing BECN.O to shareholders, after North America's largest publicly traded distributor of roofing materials repeatedly rebuffed his offer. nL3N3ON0RB

Eversource Energy ES.N said it has agreed to sell its public water supply unit in a deal valued at $2.4 billion, as the utility firm aims to pare debt and focus on the core electric and natural gas businesses. nL3N3ON1JI

U.S. industrial company Emerson Electric EMR.N agreed to pay $7.2 billion to buy the remaining shares in software supplier AspenTech AZPN.O that it does not already own, the companies said. nL3N3ON18K

U.S.-based Diversified Energy DEC.N said it will buy private equity-owned Maverick Natural Resources for $1.28 billion, including debt, to expand into the oil and gas-rich Permian Basin, sending its shares up 4.3%. nL2N3OM09A

Sage Therapeutics SAGE.O said on Monday that its board has unanimously rejected Biogen’s BIIB.O $469 million offer, stating it "significantly undervalues" the company and does not serve shareholders' best interests. nL3N3ON0YV