The Belgium worldwide, who is yet to sign a new deal with Chelsea, has less than a year remaining on his contract.
The playmaker has always been linked with a move to Spain, and told French radio station RMC he has made a decision on his future.
The interview took place around two months ago, but Hazard would have known that it was not due for release immediately.
Pressed again as to when those in London and Madrid can expect to be made aware of his plans, Hazard added: "I do not know, we'll see. I have decided", said the 28-year-old Belgian global. Additionally, playing at a more creative club like Chelsea could potentially boost his return further.
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The Spanish giants have made Hazard their number one transfer target are said to be willing to pay £100m to prize him away from Chelsea.
But Chelsea do not want to offer players over the age of 30 multi-year contracts.
In Hazard's case, we remain hopeful that he extends his contract - and will do until the day we see him holding the Real Madrid shirt.