Bayern have a full agreement in place with Tuchel, according to Fabrizio Romano, with final documents being prepared on Thursday night.
The ex-Chelsea boss will be asked to repeat the feat he pulled upon taking over mid-season at Stamford Bridge, when he won the Champions League just months into his tenure. He will inherit a talented squad that has underperformed domestically since losing Robert Lewandowski last summer but is still alive in Europe.
Tuchel was sacked by the Blues at the beginning of the Premier League campaign and replaced by Graham Potter. Since then, he has been linked to several jobs, including Real Madrid, where Carlo Ancelotti is reportedly on the brink of an exit.
Nagelsmann never managed to fully win over Bayern supporters, crashing out of the Champions League to Villarreal last season and trailing Borussia Dortmund in the Bundesliga this term.
Only a difference of one point separates Bundesliga leader Dortmund (53 points) and runner-up Bayern (52) before their match against each other on April 1. It’s the smallest point difference of the big-five European leagues.
Bayern will return to action after the international break against Dortmund in a crunch top-of-the-table clash in the Bundesliga.