Chelsea were under pressure for most of their match with Manchester City and David Luiz admired their grit in the face of adversity.
Manchester City dominated most of the match, but goals from N'Golo Kante and David Luiz ensured it was Chelsea who triumphed.
Maurizio Sarri claims Chelsea are in regular discussions with Eden Hazard over a potential new deal.
Cesc Fabregas and David Luiz have just over six months left on their contracts, but Maurizio Sarri wants them to stay at Chelsea.
Chelsea were comprehensively beaten by Tottenham on Saturday, but David Luiz revealed Maurizio Sarri's reaction was not one of sheer anger.
Despite the Blues needing a late Ross Barkley goal to claim a point, Chelsea defender David Luiz blasted Manchester United's tactics.
Maurizio Sarri lauded Chelsea centre-back David Luiz, who has been a mainstay for the club this season.
David Luiz said Chelsea would rest ahead of their double-header against Liverpool after they were "too slow" in the 0-0 draw with West Ham.
Chelsea's 21-man travelling party for Thursday's Europa League trip to PAOK does not include Eden Hazard, David Luiz or Mateo Kovacic.
As well as impressing on the training ground, Chelsea defender David Luiz has hailed Maurizio Sarri's positive outlook on life.