Napoli ultimately let Sarri go, but the relationship between both parties has subsequently become strained, as a war of words is waged in the media.
The Mirror adds that Cahill has fallen down the pecking order at Stamford Bridge under Maurizio Sarri, as the Italian has reinstated David Luiz into the starting XI. "It's not easy, but I have to try", Sarri told reporters.
Yet their constant turnover of managers and players appears to contradict all the received wisdom about the importance of stability in football.
"It was only a decision about the positions, I chose to put on the bench two wingers and one midfielder", Sarri said in a pre-match press conference.
Then, the game sprung into life with plenty of late controversy at St James' Park on Sunday. "And, if the team enjoy the game, they have a lot of opportunities to win". "Against these teams you can lose because they play a crucial pass, or ball behind, or fantastic cross, so to concede two goals, a penalty that was doubtful, and a free kick that was doubtful".
"I have to say thank you to Rafa because when I arrived in Naples I had a feeling the team was nearly ready to play my football", he said.
Spurs face Manchester United in first season-defining clash
But if you lose and not perform in the way that you expect, the pressure touches you, and we are always under pressure". History is not on Tottenham's side as they have rotten record at Old Trafford in recent years.
It's about the big picture.
Spain global Marcos Alonso was again fantastic for Chelsea in this game as he forced Yedlin to score an own goal at the death. "I have never seen Benitez in Italy with five defenders, so at the beginning I was really surprised". I don't know if I'm a very good Coach if I teach another way of football. Because you know you can play more'. You have to change completely.
Jamaal Lascelles allegedly asked to play on the right in a set-up of three centre-backs and insisting he should be in the middle, leading to Rafa leaving him out supposedly.
Sarri has seemed especially wary of rushing the Belgian worldwide back into the swing of things too early this season after his excursions at the World Cup and now it's evident why. You are not depending on the opponent.
Here's the Chelsea team to take on Newcastle...
Benitez stuck to his plan - using a 5-4-1 formation against the Blues - and his side showed little attacking intent during the first half. "I am sure that he will remain here for this season. If you defend forward, you only have to do 10-15m", Sarri continued.