BERLIN, GERMANY - MAY 14: coach Jens Keller of 1 FC Union Berlin during the game between 1st FC Union Berlin and 1st FC Heidenheim on May 14, 2017 in Berlin, Germany. (Foto Jan-Philipp Burmann/City-Press GbR)
BERLIN, GERMANY - MAY 14: coach Jens Keller of 1 FC Union Berlin during the game between 1st FC Union Berlin and 1st FC Heidenheim on May 14, 2017 in Berlin, Germany. (Foto Jan-Philipp Burmann/City-Press GbR)