Zola and Sarri have formed quite the team at Stamford Bridge, our position in the table is testament to that.
Maurizio Sarri has an enviable record and even managed to oversee this victory while suffering from a fever, presumably the same illness that befell Cesc Fàbregas and ruled him out of this game.
"It's a nice thing to have, even the other day when it went 1-1 you were sitting there and you were like "at least Hazard has not still got to come on", do you know what I mean? He is very important for us", the Blues boss said.
But now Barkley is shining under new management and is in line to face Everton for the first time on Sunday with Sarri insisting he is now "a complete player".
"I understand Eden Hazard needs the minutes but surely you'd rather him have them against Everton rather than travelling all the way to Belarus".
It has not yet been determined why the attacking star sat out training on Thursday, but the fact that he was not involved so close to the next match has to be something of a concern. "I want to choose for another way, not for this kind of thinking".
The 24-year-old did not play for Everton in the last seven months of his time on Merseyside due to a hamstring problem and eventually moved to Chelsea in a cut-price £15 million ($19 million) deal.
Barkley anticipates facing some hostility from Everton's visiting supporters, after moving on following 13 years at Goodison Park. It is normal to look around and think, 'With what club can I achieve that with?'
"I'm not nervous, I'm excited to play against my former club and team-mates - I understand how some of them play, so that could be an advantage for me".
And Olivier Giroud will hope his goal against BATE earns him a start, but Morata has four goals in four league games so is likely to retain his place. Kante did not feature.