Marymount Manhattan College, in New York City, has struck a deal to merge with Northeastern University, in Boston. Terms of the deal were not disclosed. The boards of both institutions approved the merger agreement, which is subject to final approval by state and federal regulators, according to a letter to campus Wednesday from Northeastern President Joseph Aoun. Once the merger is complete, Marymount Manhattan students will transition into comparable Northeastern programs, at no additional cost, Aoun said. The new entity, once fully formed, will be called Northeastern University – New York City.