Tuchel was at Dortmund from 2015 to 2017
However, it won’t be plain sailing for the German as he prepares for a series of tough tests in his opening weeks in the job.
Tuchel has already experienced success against Pep Guardiola on the European stage, beating him in the 2021 final with Chelsea.
Guardiola got the better of him in their following meetings, but Tuchel currently holds their Champions League bragging rights.
Should Bayern win over the two legs, they will face the winners of Real Madrid vs Chelsea.
Tuchel would therefore prepare for his return to Stamford Bridge just eight months after he was dismissed by the Blues.
It would see him come up against his replacement Graham Potter in the dugout in west London as both sides fight for a coveted spot in the final.
He is a fan favourite at Chelsea, with some supporters continuing to sing his name, but their support could be silenced should Tuchel get his revenge on the biggest stage.