Chelsea have only been willing to sell Courtois once they have a replacement on the books.
Despite posting a heartfelt message to Chelsea fans - and being part of two title-winning squads - Courtois' kind words were not replicated by the Stamford Bridge faithful and he had to delete his post.
That deal contained the clause that forced Chelsea to make the 23-year-old the most expensive goalkeeper of all time.
"I'm coming into a club that has just won three Champions Leagues in a row and it's important to keep winning all the trophies we can", he said.
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Chelsea added in a statement that subject to the completion of the Courtois deal, Croatian midfielder Mateo Kovacic would join the Blues from Real on a season-long loan.
Real Madrid confirmed Courtois will undergo a medical on Thursday morning before signing a six-year deal.
Report after report has surfaced over Courtois' exit, with stories going as far to say that a fee had been agreed between Chelsea and Real Madrid for the Belgian.
The Mirror are reporting that Real Madrid have identified Spurs playmaker Christian Eriksen as their prime transfer target before the transfer window slams shut for clubs outside of the Premier League later this month. "I just hope I can adjust and adapt as soon as possible but we are all different".
"A huge thank you to all my team-mates and the technical staff, who I shared success and incredible moments with". "I knew some of the players in the current team because I had played with them in the Spanish national team, even in the World Cup", he said.