WASHINGTON -- Pat Listach, the Nationals' third-base coach, is leaving the organization to become the bench coach of the Cubs, two baseball sources said Monday.

Listach, Nationals general manager Mike Rizzo and manager Jim Riggleman were not available for comment, and the Cubs did not confirm nor deny that they will be hiring Listach. An announcement will be made after the World Series.

It wasn't known who will replace Listach, but one source said the new coach will come from outside the organization.

Listach, 43, has a history with the Cubs, managing in their Minor League system for four seasons, going 258-217 during that time. His best season was in 2008, when he guided Triple-A Iowa to an 83-59 record and was named the Pacific Coast League's Manager of the Year, and he is still respected by the organization.

Listach made it known in August, when Lou Piniella retired as Chicago's manager, that he would like to manage in the big leagues and for the Cubs someday. However, he was told in early October that he was not being considered for the Cubs' managerial position. The job eventually went to Mike Quade, who had replaced Piniella on an interim basis.

Listach is managing Ponce of the Puerto Rico Winter League this offseason.