UPDATE 1-Market Chatter -- Corporate finance press digest

(Adds items)

BANGALORE, Aug 12 (Reuters) - The following corporate finance-related stories were reported by media on Wednesday:

* Indian state-run explorer Oil and Natural Gas Corp (ONGC.BO) is in talks with three Russian firms about a joint bid for a stake in YPF, the Argentinean arm of Spanish oil major Repsol YPF SA (REP.MC), the Economic Times reported on Wednesday citing an unnamed person privy to the development. [ID:nBOM1826]

* JPMorgan Chase & Co (JPM.N) is looking to sell 23 office properties in what may be the country's largest office real estate sale this year, the Wall Street Journal said in a report on its Website. [ID:nN11543321]

* Belgian-based RHJ International (RHJI.BR) will ask for less than 3 billion euros ($4.25 billion) of state aid as part of a bid for Opel, Handelsblatt reported on Tuesday, citing government and financial sources. [ID:nLB245823]

(Compiled by Shivani Singh; Editing by Dan Lalor)