Harvey McGrath, chairman of British insurer Prudential plc , said on Tuesday that he was confident of gaining shareholder approval for its proposed $35.5 billion takeover of American International Assurance, the Asian life insurance business of AIG .

Prudential needs a 75 percent shareholder vote to get the deal over the line.

Prudential is facing some opposition to its takeover of AIA, with some investors questioning the price Prudential is paying to transform itself into an insurance behemoth in Asia.