Wolfsburg managing director Jörg Schmadtke has backed beleaguered coach Florian Kohfeldt again and criticised that both of them are held responsible for the current slide. Wolfsburg are winless in 11 games in all competitions and have slipped to fourth-last in the Bundesliga after a 2-0 defeat at Leipzig on Sunday. Kohfeldt replaced Mark van Bommel in autumn and after briefly steadying the ship is now under constant fire, and so is Schmadtke. “I have the impression that the only issue is the future of the manager and the coach and that we are not talking enough about performance,” Schmadtke to…