The Champions League is top of Borussia Dortmund’s agenda in the coming days and weeks for two different reasons. Dortmund travel to Atletico Madrid for a first leg quarter-final in the elite event on Wednesday and at the same time need points in the Bundesliga to qualify for it again next season. Winning the Champions League offers direct entry into the next campaign but that could be an even tougher ask for the 1997 winners and 2013 finalists than qualifying via the Bundesliga for which a top four finish is needed. Dortmund slipped to fifth with a 1-0 home defeat on Saturday against VfB Stut…