The German professional coach, has named the key players to miss miss the sensational welcome of Michael Carrick's men.
The German boss, has disclosed that Kovacic and Ben Chilwell will not be taking part in the crucial clash.
During the Pre-match press conference today, Tuchel also disclosed that N'Golo Kante is still in major doubt of featuring against the Red Devils.
Tuchel went further admitting that though he is quite better, but he could actually miss the clash.
"N’Golo twisted his knee a little bit [against Juventus]. He feels quite better since the game but it seems like he will be out for some days or one week maybe.
We have a little hope but it would be almost a miracle if he makes it [to play against Man United].”
However, Chelsea will be hosting Manchester United in their home on Saturday evening by 16:30 GMT.