From what I've heard he would be willing to waive his no-trade clause to go to the Giants because San Francisco has a huge Asian population and is a beautiful city, etc... plus he played for the Japanese version of the Giants before coming to the Yankees so it's a marketing thing for himself as well as the Giants.

Although I still wouldn't give up either of the top to young pitching prospects on the Giants for him. Possibly Lowry or Sanchez if Matsui were going to backing up another slugger.