I had the same thought, while still playing in Chelsea, Eden Hazard looked shiny and he plays a key role there. But when he moved to Real Madrid, his performances didn't look good (just occasionally he looks great but can't be consistent in every game). So there is nothing wrong with Real Madrid selling Hazard because the funds can be used to buy other players.
~snip~
This happened with Zidane, maybe next season will be different with Anceloti. Actually I hope Hazard can play like at chelsea. I wonder why at Madrid he got so many injuries? I had time to think, is Madrid's training method wrong for Hazard? It looks like both clubs have experts on this, but why are the results different? If I look at the league, I think the EPL is harder, faster than La Liga, he should have worked harder in the EPL and in La Liga it was less. Maybe there should be an evaluation for Madrid in treating its players. Because I see there are not only Hazard.