Bayern Munich chief executive Oliver Kahn has ordered his players to show a reaction in the Champions League against Red Bull Salzburg after the chastening 4-2 Bundesliga loss at Bochum at the weekend. “I’m assuming that the players know that a first half like the one in Bochum is unacceptable. We were far below our capabilities,” he told reporters on Monday. The Bundesliga leaders travel to Salzburg on Wednesday for their Champions League last 16 first leg. “Sometimes it is good that you can play a few days later now in Salzburg and quickly forget such a result,” the former Bayern goalkeeper …