Another fucking stupid statement driven by ignorance with no facts. For all you know he might have sick parents, grandparents or other relatives that he would like to spend more time with. He might prefer to bring his kid up in Germany, he might just not like the English lifestyle, he may want to be closer to his friends; we have no idea.
Publicly saying he wants to leave will do one thing and one thing only; reduce our negotiating power. So he's done absolutely the right thing and kept quiet to protect the clubs investment. By not signing a new contract he leaves his options open. As a young man he may change his mind, he may not, who cares, it's his decision. If he plays out the remainder of the season he's done exactly what we signed him to do, play well and win trophies over the 5 year period he signed his original contract to do.