Reston, Virginia-based Leidos submitted an offer earlier this month that prevailed over rival U.S. defense contractor CACI International Inc ( Leidos plans to merge with the Lockheed businesses for sale under a so-called Reverse Morris Trust, a transaction that allows a parent company to divest a unit in a tax-efficient manner, according to the sources. If the terms of the potential agreement are finalized, Leidos and Lockheed Martin could announce a deal as early as next week, the people added.