On a summer day in 2013, Bayern club doctor Hans-Wilhelm Müller-Wohlfahrt received an unexpected visitor in his practice near Munich’s Marienplatz: Jupp Heynckes, then 68, freshly retired from coaching Bayern after winning the first treble in club history. In grand seigneur style, Heynckes brought along the Champions League trophy, the Meisterschale and the DFB Cup for a photo with the doctor and his staff. It was a noble gesture – from a man who had clearly changed.