When Hoeneß sacked Klinsmann in April 2009, he remembered Heynckes, out of work since leaving Gladbach in 2007. Heynckes coached Bayern to second place, then went to Leverkusen (2009–11), then returned for his defining spell.
From 2011 to 2013: first the runners-up treble (2012), then the real Treble. Barcelona humiliated 4-0 and 3-0 in the semi-final. When Ancelotti was sacked in October 2017, Heynckes stepped in once more out of friendship.
Never has there been more love between a Bundesliga squad and its coach.