Conte has fallen out with the Chelsea board and has reportedly threatened to quit.
Conte is frustrated with the board’s inability to get his summer targets as he continues to manage a very thin squad.
Chelsea have made three signings this summer, Alvaro Morata from Real Madrid, Antonio Rüdiger from Roma and Tiémoué Bakayoko from Monaco.
Pursuits of the likes Alex Oxlade-Chamberlain and Sandro have failed so far and Conte is reportedly ready to quit.
According to Bild, Chelsea have quickly contacted Tuchel to succeed Conte.
Tuchel, 43 was coach of Borussia Dortmund for two years before he was sacked after a fall out with the board last season.