Chelsea were back in front within two minutes - after Palace inexplicably failed to clear Hazard's free-kick.
The Blues are in Premier League action at home to Crystal Palace on Sunday afternoon.
"We need to improve, I think, covering the ball in the other half".
The three attack-minded players being considered by the old Trafford outfit are Moses, Eintracht Frankfurt's Croatia star Ante Rebic and AS Roma's Cengiz ünder.
The match starts at 16:00 on 4 November 2018.
As speculation persists over who the long-term replacement might be, Chelsea are reportedly eager to pounce on the turbulent waters at Real Madrid and tie down their superstar whilst they can.
The west London side have won seven times and have drawn three games to secure 24 points from their opening 10 games in the Premier League.
Few could have envisioned a better start under Sarri, whose players have nearly instantly adapted to his methods and expectations.
Chelsea boss Sarri will equal the 11 Premier League matches without defeat that Clark racked up as the new manager of Nottingham Forest back in 1994, should the Blues avoid defeat at Stamford Bridge this weekend.
However, Hazard is eternally grateful to his current club for everything they've done for him since his move from Lille six years ago, and he's loving playing under his new manager, Maurizio Sarri. "It is too easy to go into the market for every problem".
"We used 26 players in official matches this season so the rotation at the moment is this but I don't know in the future", Sarri added. The midfielder has put together a string of impressive performances recently which saw him subsequently nominated for the Premier League player of the month award.
"If we want to be competitive and win something, then we need to be a solid team".
After Hennessy pushed away headers from Morata and Luiz, Sarri brought on the fit-again Eden Hazard along with Mateo Kovacic.
FW Pedro Rodriguez, 7 - Has had a tough time of late with injuries and illness, but remains the most clinical finisher in the Chelsea squad and underlined his status with a deadly first-time finish from Alonso's low cross in the second half.
Wednesday's scrappy win in the Frank Lampard Clásico is unlikely to stop Maurizio Sarri ringing the changes on Sunday, but the Italian will no doubt have been pleased enough with what he saw.