Microsoft is an unwieldy business and should be broken up, CNBC's Jim Cramer said Friday, and the tech giant needs a savior like Ford's Alan Mulally to drive a corporate "miracle" and get the company back on track.

Although Cramer dismissed the rumor that Mulally would jump to Microsoft—because his job isn't yet complete at Ford—Cramer said that in theory, Mulally would be a good thing for the company.