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(Reuters) - U.S. Justice Department said Assistant Attorney General Makan Delrahim of the department’s Antitrust Division will announce a significant merger enforcement action on Friday.

The justice department is set to announce that it is approving the merger of Sprint Corp S.N and T-Mobile US Inc TMUS.O at a press event on Friday, sources briefed on the matter told Reuters.

The expected approval will come with conditions and a consent decree that will include the carriers selling assets to Dish Network Corp DISH.O, people briefed on the matter told Reuters.

T-Mobile is awaiting approval for its $26.5 billion deal to buy smaller rival Sprint, as the third-largest U.S. wireless carrier seeks scale to compete with bigger rivals such as Verizon Communications Inc VZ.N and AT&T Inc T.N.