Chelsea and Sarri can not afford the misery of their poor league form to be compounded by failure in Europe, where they face Malmo in the Europa League on Thursday, after which the daunting prospect of an English League Cup final return against City awaits on Sunday.
This Sunday they take on Pep Guardiola's City in the Carabao Cup final and it's no exaggeration that it's a must-win game.
Chelsea assistant Gianfranco Zola is already being lined up to take over the reins as caretaker manager until the summer, with Zinedine Zidane and Frank Lampard eyed as potential long-term solutions.
"He did very well at Napoli and even at Chelsea, despite the recent results, he has done a good job".
Win at Wembley and Chelsea will receive a much-needed confidence boost heading into the business end of the season; lose and it could be the last we see of Sarri.
The 25-year-old German said: 'Fatigue, no, because it's not like we are doing box-to-box runs. We are trying to avoid some mistakes by video.More news: Cyclone Oma makes it way towards southeast Queensland
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'We also need to improve our movement off the ball so we can keep moving the ball quickly when have control of possession.
"You always play for your manager, but you want results".
Under-pressure boss Maurizio Sarri's side won the first leg 2-1 in Sweden.
Willian has created 22 goal scoring chances for Chelsea in the 2018-19 Europa League, scoring two and assisting three goals; no other Chelsea player has both scored and assisted a couple of times.
'The next seven days are very important for our season, in there different competitions, and a strong performance tonight is the best way to approach this run of games.
The Blue plays City for the first silverware of the season at the weekend and then host Tottenham next Wednesday.