Kramer paid the price for the Clover Leaves' below-par season so far, having earned just four points of a possible nine on offer in 2015 to leave the club dangerously close to the relegation zone in 13th place.
Büskens: 'The club has a big place in my heart'
"We thank Frank for his exemplary commitment," said president Helmut Hack after informing Kramer of the decision on Sunday evening. "He took over at a difficult time after we were relegated and played a big role in our successful 2013/14 season, but we can't ignore the developments in recent months. We've only won once in our last ten games and haven't scored at home in our last six matches."
Büskens was previously head coach at Fürth from December 2009 to February 2013, earning promotion to the Bundesliga for the very first time in 2012, only to be relegated again straight away. "We've experienced some wonderful moments together here and the club has a big place in my heart," said Büskens after his appointment. "I'll give it everything I've got to haul us out of this difficult situation and to enjoy success again together."