Real Madrid is linked with many world-class players to replace Ronaldo at Los Blancos with the likes of Neymar, Mbappe, Kane, Hazard all on the wish list for potential transfer for the past few months now with no success in any deal.
Hazard played under Mourinho for more than two years and was an integral part of Chelsea's title win in 2014-15, scoring 14 Premier League goals and being voted the Professional Footballers' Association Players' Player of the Year.
Hazard described the last season under Mourinho as unpleasant.
Hazard only scored four English Premier League goals in the entire 2015-16 season and had not netted at all when Mourinho lost his job in December 2015. Then he is a friend of yours - you can do whatever you want. We had a team that could win more trophies. I was dreaming about this club.
Mourinho, who is under pressure once again, this time at United, was sacked in 2015 with Chelsea a point above the relegation zone during their title defence. At the end of the day, you've got to get the fruits of your labour.
With Julen Lopetegui on the brink after a shaky start to his first season in charge at the Santiago Bernabeu, Real badly need a new talisman to take over from Cristiano Ronaldo who left for Juventus in the summer.
"His contract expires in 2020, but he's staying here", Sarri told Corriere dello Sport. Those players are usually those in the Portuguese's successful sides where, as Hazard says, the relationship between manager and player is at its best. Hazard is vast and I don't think even he knows how much he can still improve.