Bayer Leverkusen's manager Rudi Voeller looks on during the official presentation of Leverkusen's new recruit, midfielder Michael Ballack, on July 14, 2010 at the BayArena stadium in Leverkusen, western Germany. The former Germany captain and Chelsea midfielder Michael Ballack signed a two-year contract with his old team Bayer Leverkusen in a 15-million-euro deal. AFP PHOTO / PATRIK STOLLARZ