Taking into account the expected store divestitures, Walgreens said it expects that the acquisition "will be accretive to its adjusted earnings per share in the first full year after closing of the transaction." Walgreens also said it expects to realize synergies in excess of $1 billion, which should be realized within three to four years of closing. The synergies are expected to be primarily from procurement, cost savings and other operational matters, Walgreens said.