Mumbai: Barclays Bank is selling a stake to China Development Bank and the Singapore government''s investment arm Temasek for up to Euro 13.4 billion, after raising its offer for ABN AMRO to Euro 67.5 billion.

Barclays is now putting together finances for what promises to be the biggest banking merger on the planet from all corners of the world.

Of the total Euro 13.4 billion, Euro 3.6 billion is unrelated to the outcome of Barclays'' proposed merger with ABN AMRO, while the remaining Euro 9.8 billion is conditional on the completion of the merger.

The Euro 3.6 billion unconditional investment will be made on August 14, Barclays said in a statement to the London Stock Exchange.

China Development Bank, one of the country''s three policy banks, will initially invest Euro 2.2 billion for a 3.1 per cent stake in Barclays. A further investment of Euro 7.6 billion will be subject to regulatory approval and the completion of the UK bank''s merger with ABN AMRO.

Temasek will pay Euro 1.4 billion for a 2.1 per cent stake in Barclays, and a further Euro 2.2 billion if Barclays'' revised offer is finally approved.

Some Euro 2.5 billion of this is subject to rights offer to existing Barlcays shareholders, the British bank is also launching a share buyback - offering to purchase up to Euro 3.6 billion of existing stock.

Barclays has revised its offer for ABN AMRO to Euro 67.5 billion. Of this, Euro 42.7 billion will be in shares and the remaining Euro 24.8 billion will be in cash.

Barclays earlier made a Euro 65 billion all-share offer for the Dutch bank.

Blackstone group, in which the Chinese government has taken a $3 billion stake, served as adviser to China Development Bank for the deal.