A Sponichi report claims Seibu Lions official Haruhiko Suzuki admitted on September 11 that Koji Akiyama was a candidate, but also said nothing was decided. As of September 10, Akiyama was telling reporters that he had not been contacted by Seibu, was honored that his name was dropped as a candidate, but did not think he was going to get the job.
Source: Sponichi 9/12/2016
According to Sports Hochi, Koji Akiyama is the front runner for the Seibu job next year. Head coach Tetsuya Shiozaki was also considered, but the organization likes Akiyama’s past accomplishments. Senior Director Hisanobu Watanabe could also be promoted to general manager.
Source: Sports Hochi 9/12/2016 @ 06:00
Tokyo Sports is reporting that the Lions have already made an offer to Shinya Miyamoto. There were other candidates, like Akiyama and Kazuhiro Wada, but Seibu apparently decided to go with Miyamoto and made him a formal offer in early September. The Lions believe he might be able to help the team develop a shortstop and improve its defense.
Source: Tokyo Sports 9/12/2016 @ 16:30
[UPDATE 9/16 @ 3:05am]
Sponichi is reporting that the Lions approached Akiyama, but gave up because negotiations were not going well. Miyamoto was always on their list of candidates, so they turned their attention to him. They are now waiting for his reply.
Source: Sponichi 9/16/2016
[UPDATE 9/22 @ 11:48pm]
Nikkan Sports is reporting that Chunichi Strategy/Fielding Coach Hatsuhiko Tsuji is a managerial candidate.
Tsuji has some experience managing at the Ni-gun level. Most of his experience is as a fielding coach spread across three organizations (Yakult, Yokohama, and Chunichi). He was also a fielding coach for the 2006 World Baseball Classic team.