Really unfortunate situation he finds himself in. Great player who's game simply doesn't suit the club or the league he's playing in although I think the latter is greatly accentuated by the former.
I hear a lot of people banging on about how good he was for dortmund but honestly, even there I've never seen him play at the level he does for Japan. He's absolutely imperious when he plays for them but one common thing both teams have is that their systems are greatly based on passing and moving, attacking through the middle rather than direct wing play which is what our clubs history is based on.
I said a long time ago and got ridiculed for it quite a bit that I hope we sell him cause he simply won't be a success here. Maybe if we had hired martinez instead of moyes, but not under this regime. This system simply highlights all his deficiencies and hides his strengths. This leads to him failing to impress most of the time and fans calling him overrated and so on.
Funny enough I think a club like liverpool would do wonders for him, although selling him to them would be akin shooting ourselves in the foot. I really want to see him find a club that can get the best out of him 'cause he's one of the best players in the world in the final third when playing in the right system, just a marvel.