An announcement could be made as soon as Sunday night for a deal that would create the world's largest beer maker, sources familiar with the situation said.

Negotiations could linger beyond Sunday, however, as many details were being tackled quickly, one source cautioned. The major issues regarding the price, board structure, executive roles had largely been resolved, however, sources said.

A deal would bring a friendly resolution to a month-long struggle that had threatened to go hostile as the two companies traded lawsuits and InBev set the stage to try to replace Anheuser's board of directors.

(Reporting by Jessica Hall, editing by Maureen Bavdek)