And with both number ones now taking part in the World Cup in Russian Federation this summer, there may be even more twists over the coming weeks regarding this transfer saga.
The Red Devils take on Brazil in a quarter-final showdown on Friday.
The Blues shot stopper is facing an uncertain future at Stamford Bridge with less than 12 months remaining on his current deal.
The Belgian goalkeeper spent three seasons on loan at Atletico Madrid before he returned to Chelsea FC become their number one. "Madrid and London are great", he said, following Belgium's win over Japan last night.
"The only thing is that my children live in Madrid and I would like them to be close". The difference is that my kids are in Madrid, and they have seen the game and they see their father and they want him to be close.
Neville thought 3 England stars would struggle at World Cup
England will seek to reach their first World Cup final since 1966 when they lock horns with a talented Croatia team on Wednesday for the right to play France for the trophy.
"Returning to Madrid? I am not going to speak about my future but after the World Cup I will see".
"I have some ideas in my mind, but I am focusing on the World Cup and have pushed all decisions ahead until after the tournament. The most important thing is my children, and I'll decide what's best for me in everything".
The Denmark worldwide has consistently been one of the best shot-stoppers in the Premier League for the past few seasons, and was key in his nation's progress to the last 16 of the World Cup.
Courtois made 154 appearances for Chelsea, and has won two Premier League titles, the FA Cup and the League Cup.