Schalke boss Jens Keller has admitted that the club cannot stop Arsenal target Julian Draxler from leaving the club, although he's happy to still have the forward. Draxler, 20, is one of the hottest properties in Europe and has already earned 10 caps for Germany, despite his tender age, and was expected to leave the Bundesliga club for Arsenal in the January transfer window. However, Schalke stood firm that they would not allow Draxler to leave for Arsenal, or any other club, unless his £37.3 million buy-out clause was met. General manager Horsk Heldt confirmed that a bid was rejected for the forward, but wouldn't confirm the identity of the club, replying “you can think what you want” when asked whether it was Arsenal. Draxler's contract still has four-and-a-half more years to run, but Keller has conceded that his future is not in Schalke's hands, adding that the situation is somewhat unnerving as a coach.