Sarri certainly seems to be working by that theory as only 14 of his players have played over 500 minutes in the Premier League this season, with seven of those playing over 2000 minutes already.
Chelsea have backed Sarri by signing striker Gonzalo Higuain, who excelled under him at Napoli, on loan until the end of the season with the option of a 12-month extension or permanent move.
The success or failure of Higuain could go a long way to determining Sarri’s own future and yet, worryingly, he has admitted the 31-year-old is not fit.
“He can improve a great deal,” said Sarri. “At this moment, he is not in good shape, probably because he has played very little recently between transfer market distractions and back pain. He can grow a great deal over the next few weeks.”
That leaves a question mark over why Sarri started with Higuain over Olivier Giroud, who brought out the best in Hazard in the Carabao Cup victory over Tottenham Hotspur, against Bournemouth.
Sarri travelled back from Bournemouth in a car with one of his coaches, away from the squad, so he could get straight to work on Thursday’s training session.
He met with the players ahead of afternoon training, in which the mood was said to be business-like.