The offer may go as high as $8 billion for the enterprise value, which includes debt. : Sao Paulo, London, Rio de JaneiroGoldman Sachs Group Inc is arranging financing for Mubadala Development and EIG Global Energy Partners ahead of a bid for Petroleo Brasileiro SA’s natural gas pipeline network in northeastern Brazil, said three people with knowledge of the matter.The offer may go as high as $8 billion for the enterprise value, which includes debt, one of the people said, asking not to be identified because the discussions are private.