According to various reports filed on August 29, Hiromoto Okubo wants to take responsibility for the team's poor performance this season by stepping down after the season.
"I am always prepared. I will talk to the team when the time is right. I have been prepared to take responsibility by stepping down since the day I accepted this job. That hasn't changed at all. But right now, there are still thirty games we have to play hard," said Okubo to reporters on August 29.
Source: Sponichi 8/29/2015, Nikkan Sports 8/29/2015
[UPDATE 8/31 @ 4:26am]
If Okubo does not return as manager in 2016, the Eagles are planning to explore all possibilities, including senior adviser Senichi Hoshino. Source: Nikkan Sports 8/30/2015, Nikkan Sports 8/30/2015 ... The Eagles could consider candidates like former Nippon Ham manager Masataka Nashida, former WBC pitching coach Tsuyoshi Yoda, and current head coach Hideki Hashigami. Source: Sponichi 8/30/2015