According to a report by Nikkan Sports, the Rakuten Eagles are expected to offer thirty-year-old Zelous Wheeler, thirty-year-old Carlos Peguero, thirty-year-old Japhet Amador, and thirty-three-year-old Frank Herrmann new contracts for the 2018 season. With regards to Wheeler, they will most likely sign him to a two-year deal.
It is unclear what the Eagles plans are with twenty-seven-year-old Joshua Corrales and thirty-three-year-old Luis Cruz.
Source: Nikkan Sports 8/23/2017
[UPDATE 10/23 @ 11:23pm]
Wheeler, Peguero, Amador, and Herrmann are expected to return next year, as is Chia-Hao Sung.
The Eagles will most likely part ways with Corrales and Cruz.
[UPDATE 10/25 @ 3:05am]
Peguero and Herrmann left for the US out of Narita Airport via Sendai Airport on October 24.
[UPDATE 10/25 @ 11:44pm]
Wheeler and Amador returned to their countries out of Narita Airport on October 25, Wheeler to the United States and Amador to Mexico.
Source: Sanspo 10/25/2017