The German boss has reportedly agreed to coach Les Parisiens once the 2017-18 season comes to a close.

Arsenal, Chelsea and Bayern Munich have been handed a massive blow for next season, as Thomas Tuchel has already signed a deal with PSG, according to ESPN.

The North American TV network revealed earlier today that the 44-year-old coach, currently taking a sabbatical, will become Les Parisiens' new boss next summer, replacing Unai Emery at the helm.

Tuchel is widely regarded as one of the best tacticians in Europe, following his impressive performance at Borussia Dortmund that was cut short due to some differences with the team's hierarchy. Tuchel didn't like how Borussia's execs handled the bomb incident prior to a UEFA Champions League clash between the yellow and black and Monaco, which forced him to leave the club last summer.

According to ESPN, the German boss was one of the final options on PSG's list. That list included names such as Antonio Conte, Carlo Ancelotti, Massimiliano Allegri and Luis Enrique as the main candidates for the job.

Tuchel's desire to coach in another league forced him to reject Bayern Munich's offer to coach them next season, since Jupp Heynckes has already stated he won't return to Die Roten's bench next year. 

The German's move to Paris will certainly cause a lot of waves in Europe, with the aforementioned bosses forced to look for work elsewhere.