#1 Carlo Ancelotti
The three-time Champions League winner and multiple time league winner in various countries, Carlo Ancelotti is Europe's most accomplished manager. Earlier this season, the Italian got the boot from Bayern but could come back to haunt Munich if he picks up the vacant job at Dortmund at the end of the season.
The Dortmund job would suit the Italian and he is experienced enough in the German league to try and correct some of his mistakes at Bayern with Dortmund. The Italian could bring back stability to the club and take on a real challenge at a historical club aiming to rise to the top of Europe once again.
The former Real Madrid, AC Milan and Chelsea manager to name a few of the top clubs he's managed. Ancelotti could make a Juventus to Milan type switch in Germany at the end of the season in what will be a great acquisition for the German club.
With a bunch of talented individuals in Dortmund, Ancelotti could usher in a new era of greatness at the Westfalenstadion.