[He could tell her to go after Namine, or one of the others, but Sakura's on his side. How can he play this... Oh.]

When you're finished chasing Kyuubi around, go after him (http://myownmemory.livejournal.com). Put yourself in contact with this man (http://kekekescience.livejournal.com) and tell him you'll deliver him the kid for a simple return piece. I'll pay you in Orichalcum or coins.