Yoshinori Tateyama's goal is apparently to become the next Takashi Saito. At least that's what he apparently said at a press conference yesterday. He also said that the Fighters asked him to stay and were understanding when he said he wanted to play in the Majors.
It seems Tateyama has also started talking to Koji Uehara to learn more about playing in the US. He also plans on hiring Joe Bick to represent him.