Chelsea owner, Roman Abramovich, who is Jewish, is at the forefront of the initiative, designed to tackle anti-semitism among fans.
Maurizio Sarri, a former footballer who turned to a career in banking in London, Zurich, Frankfurt and Luxembourg, before returning to coaching, took over at Napoli in 2015.
Hazard, who led Belgium to 3rd place at the 2018 World Cup, feels it's the right time for a fresh challenge with Madrid as his preferred location.
Manchester City remain at top of the table on goal difference in the Premier League.
John Terry made 717 appearances for Chelsea, scoring 67 goals, and was widely regarded as one of the best English centre-halves of his generation.
Ross Barkley set up Eden Hazard's 30th-minute opening goal before adding the second as Chelsea beat Southampton on Sunday.
Chelsea head Group L with a maximum six points with PAOK level on three points alongside BATE Borisov.
Chelsea's opening seven Premier League games have yielded five wins and two draws
Daniel Sturridge stunned Chelsea with a late goal to rescue a point for Liverpool.
For the second time in four days Eden Hazard seemed set to haunt Liverpool.
Chelsea have emerged as surprise challengers for the title ahead of their meeting with leaders Liverpool on Saturday.
The showdown between Premier League leaders Liverpool and title rivals Chelsea at Stamford Bridge would be the centre of attention.
Eden Hazard's spectacular goal gave Chelsea a 2-1 win over Liverpool at Anfield in the Carabao Cup.
Chelsea are currently in third place, two points behind Liverpool after an unbeaten start to the season.
Jurgen Klopp said he will name a strong side for Wednesday's League Cup match against Chelsea.
Chelsea enjoyed more than 70 per cent of possession in the first half but West Ham were dangerous when they were able to break out.
Olivier Giroud, who moved to Chelsea in January, believes the battle with Alvaro Morata is positive for the team.
Chelsea have won all five of their Premier League games so far under Sarri ahead of Sunday's trip to West Ham.