The former wonderkid was once the brightest talent in the Bundesliga, but how come the 22-year-old is still without a club after leaving Schalke?
The little 5'8" (1.7m) kid had the world at his feet. He made his debut as a 17-year-old, proving that despite his height, he had all the ball skills to prove himself in a man's game. A product of the club's academy, he was seen as a future superstar for title contenders, someone who could become world class and help them compete with the best teams in Europe.
In his first season after that debut, he played less than 10 league games, but had shown enough promise and enough talent to earn a more regular spot the following season.