The deal would follow Aetna Inc’s $37 billion agreement earlier this month to acquire Humana Inc, potentially reducing the number of major U.S. insurance companies from five to three and attracting antitrust scrutiny. Most issues that were preventing Anthem and Cigna from reaching a deal, such as price and the role of Cigna Chief Executive David Cordani, have been resolved, the people said. Anthem has slightly improved on its previous cash and stock offer of $184 per share and will pay somewhere near $187 per share for Cigna, one of the people said.