By going back to Bayern Munich after helping them to the Champions League title in 2012-13, Jupp Heynckes is playing with fire.
Now in his fourth spell at the club, he has arguably more to lose than ever before. His reputation, which could not be higher after leaving following a dramatic 2-1 victory over Borussia Dortmund at Wembley, is on the line as he tries to pick up the pieces of a poor start to the season made under Carlo Ancelotti.
Rarely do managers return to major clubs, particularly on continental Europe – and when they do, it rarely goes well. Here are five managers who returned to their former clubs:
#5 Harry Redknapp (Portsmouth 2002-04, 2005-08)
Now in the news again as he toys with the possibility of becoming Scotland manager, Harry Redknapp was for a long time one of the most highly regarded English bosses in the game. Perhaps his peak times came with Portsmouth, whom he helped into the Premier League during his first stint then succeeded in winning the FA Cup in his second.
Since then, it has not gone so well for the former Tottenham boss as he was sacked from his role at Birmingham City with the club struggling to survive in the Championship. Portsmouth have suffered an even more severe decline, having played in League Two until the last term.