American International Group was closing in on a deal to sell its foreign life insurance unit to MetLife Inc for about $15.5 billion in cash and stock, sources familiar with the matter say. MetLife is expected to pay AIG about $6.8 billion in cash and about $8.7 billion in equity, which includes convertible preferred, common shares and common equivalent securities, for the unit, American Life Insurance Co (Alico). Read the Reuters story here.   Indian conglomerate Essar Group plans to raise about $2.5 billion to $3 billion by listing its energy and power businesses on the London bourse in late April, a person familiar with the matter says. Read the Reuters story here.   In other M&A and corporate finance news on Monday:   Kraft Foods is being investigated by UK regulators on whether the company misled employees and investors in its pursuit of Cadbury, the Wall Street Journal said, citing people familiar with the matter.   Top Prudential shareholders are threatening to revolt because they were not given a role subunderwriting the insurer’s $20 billion rights issue, reports the Telegraph. Shareholders are “furious” they have not been offered a role and that the job and lucrative fees that go with it have been given to a group of 30 banks instead.