Bundesliga runners-up VfB Stuttgart will lose two more key players in striker Serhou Guirassy and Germany defender Waldemar Anton, board member for sport Fabian Wohlgemuth confirmed on Thursday. “Both have informed us that they will leave the club,” Wohlgemuth said at the start of pre-season training. Guirassy and Anton have release clauses in their contracts and have been linked with a move to Borussia Dortmund. Wohlgemuth said the clauses have so far not been triggered and that he could therefore not say where they will be heading. Guirassy scored 28 goals and Anton was a rock at the back as…