American International Group Inc.will announce early Monday an agreement to sell American Life Insurance Co., also known as Alico, to MetLife Inc. for $6.8 billion in cash and $8.7 billion in stock, including common stock and convertible preferred securities, according to a report Sunday. The deal, totaling $15.5 billion, involves a complicated structure that will leave U.S. government-controlled AIG owning roughly one-fifth of MetLife, The Wall Street Journal reported, citing people familiar with the matter. AIG and MetLife were putting the final touches on the agreement Sunday, the report said.