Thomas von Heesen has resigned as coach of DSC Arminia Bielefeld following Sunday's 1-0 defeat at FC Bayern München, with his No2 Frank Geideck taking charge.
Von Heesen had been due to leave the Bundesliga club at the end of the season, but with the team without a win since 11 November, the 45-year-old former 1. FC Saarbrücken trainer has chosen to go now. His decision has allowed Geideck to assume control with immediate effect and with the security of a long-term contract.
The 39-year-old Geideck will lead a side sitting eleventh in the German table, three points off the relegation places. Von Heesen, who was in the third season of his second managerial tenure at the 'Alm', said: "There has been too much unrest in recent days and we wanted to find a quick solution." He had previously occupied the hot seat during the 1998/99 campaign. His successor first joined Arminia in 1972 as a player.