The media learned on October 15 that Shun Yamaguchi has not ruled out exercising his domestic free agent option. The Yokohama Bay Stars are open to resigning Yamaguchi even if he exercises his option, but do not want to get involved in a bidding war.
[UPDATE 10/20 @ 8:55am]
The Bay Stars spoke to Yamaguchi at some point after October 15 and may have offered him a three-year deal. They are not planning to make changes to their offer based on what other teams are offering.