Aug 20, 2009 11:29 AM EST

The Washington Nationals, according to a source familiar with the situation, plan to announce Mike Rizzo as their permanent general manager on Thursday, easing a major source of uncertainty within the organization and rewarding the 48-year-old with the job he has long auditioned for.

Rizzo, who had served as acting general manager since March when Jim Bowden resigned, has frequently acknowledged his desire to become Washington's full-time general manager.

Via Washington Post