Sponichi reports that Nishioka left for the US via Narita today. Before leaving, he told reporters that he was excited but also nervous about playing in the US. He also said that the next time he returns to Japan, it'll be with a different team and he'll likely have a new uniform number as well.
According to a Nikkan Sports report, Tsuyoshi Nishioka and the Minnesota Twins will likely finalize a multi-year deal some time this week. As of 12/16 at 11:23am (the date/time the Nikkan Sports article was filed), Nishioka was scheduled to leave for the US later today for a physical and to work out any last minute details on the deal.