The Rakuten Eagles announced today that they hired forty-four-year-old Kazuhisa Ishii to be their general manager, effective September 1. Ishii will become the first former player with MLB experience to become a general manager in the NPB. A press conference is scheduled for the 27th.
[UPDATE 10/2 @ 2:56pm]
The Rakuten Eagles announced on October 2 that Ishii was named director during a special stockholders meeting on October 1. His official title will be direct/general manager.
Source: Rakuten 10/2/2018