Chelsea signed the Germany international from Leipzig for £47.5m in 2020.
But the 26-year-old has struggled since joining English football, scoring a disappointing 23 goals in his 89 appearances for the Blues.
Chelsea have now decided to sell the striker back to Leipzig, according to transfer expert Fabrizio Romano.
“Leipzig ready to sign Timo Werner from Chelsea, let’s do it! Told it will be a permanent contract, not a loan. Werner will be leaving Chelsea,” Romano tweeted.
“First call to @Plettigoal today, final details are being discussed now – done, personal terms agreed since 1 month.”
Chelsea have allowed Romelu Lukaku to leave Stamford Bridge this summer, with the Belgium international rejoining Inter Milan on a season-long loan.
If Werner also leaves, Thomas Tuchel’s squad will be left with just two senior strikers, Kai Havertz and Armando Broja.
Leipzig ready to sign Timo Werner from Chelsea, here we go! Was told it would be a permanent deal, not a loan. Werner is leaving Chelsea. 🚨⚪️🔴 #CFC
— Fabrizio Romano (@FabrizioRomano) August 7, 2022
“There’s not much demand for the number nine. Players sometimes want to change the number, but surprisingly no one wants to touch it.
“Like, everybody older than me at the club told me, ‘You know he has nines and he doesn’t score, he has nines and he doesn’t score.’ Now we have time and nobody wants to touch the numbers. Nine.”