It will require some top management to fix the confidence in the Chelsea dressing room after Sunday afternoon's devastating defeat to Manchester City.
It began badly as they were caught napping after just four minutes. Kevin De Bruyne released Bernardo Silva, who cut back for Sterling to strike into the net.
Chelsea boss Sarri headed straight down the tunnel without shaking hands with Pep Guardiola, but the pair spoke privately after the game.
"Incredible week, incredible game", Pep told the BBC after his side dismantled Chelsea.
But the Catalan coach need not have anxious that would prove a costly miss as Aguero made amends in stunning fashion by blasting into the top corner from 25 yards to double City's after just 13 minutes.
City made a blistering start and led 4-0 inside 25 minutes, with Aguero on target twice.
Sarri has lost eight of 40 games in charge and the current Chelsea squad do not seem to be listening to him either, so Abramovich is the only person who can truly say how long he has at the helm.
He said: "We have won three titles since we have been together".
It could even have been worse for Chelsea as Aguero missed an early sitter and also hit the bar.
The Madness song is usually played over the public address system at Stamford Bridge - but Manchester City made a decision to rub salt in the wounds by playing it after hitting them for six.
This gritty success was the ideal preparation for hosting Borussia Dortmund in the Champions League last 16 first leg on Wednesday. I do my best and the players do their best.
"The first five or six minutes went well but that is not enough".
Insisting he was happy for Vardy to take the penalty, Puel said: "I gave him the opportunity".
So, with the summer transfer window drawing gradually closer, The Grapevine has the very latest football transfer news from the Premier League's top clubs in the round-up below.