Seems Goto actually informed the club today that he will be exercising his FA option so that he can test the market. He also told that club that he's still 50/50 in terms leaving. The Buffaloes told reporters that they will continue talks with the hopes that he'll stay.
According to Sports Hochi, it appears Mitsutaka Goto will be staying with the Orix Buffaloes and will likely inform the club of his decision during a meeting today.
The Buffaloes are assumed to have a 3-year, 300M yen offer on the table.