Despite Bayern Munich’s collapse in the 3-2 Bundesliga defeat at Heidenheim on Saturday, coach Thomas Tuchel’s job is safe ahead of the Champions League clash against Arsenal next week. “No, I didn’t have that thought,” board member for sport Max Eberl told broadcasters Sky asked about a possible change of coach at short notice. “That’s definitely not the way to go. It’s not always just a coaching problem.” Ahead of the first leg of their Champions League quarter-finals at Arsenal on Tuesday, Bayern were stunned by Heidenheim after taking a 2-0 lead in the first half. The defeat, combined with…