The Brazil goalkeeper's switch to Fener has been announced by both clubs this morning.
Ederson wrote to fans on City's website, stating:
"Under Pep (Guardiola), we have dominated the Premier League and conquered Europe. It has been amazing.
"I would first of all like to thank him and head of goalkeeping Xabier Mancisidor for making me the best goalkeeper I could be and teaching me so much about the game.
"I must also thank my team-mates. Our desire to win every game we play has been a joy to be a part of and that has made me relish every day on the training field or in the dressing room with every one of you.
"Finally, the fans. Thank you for making me feel at home in a city so far away from where I am from and for supporting me throughout what has been an amazing period for me and my family.
"I arrived in Manchester eight years ago full of hope, but I could not have predicted such a beautiful time together.
"Playing for City has been the most special time of my life and I will always be a fan of this special club.
"I’m going with my wife and children, but I’m leaving a big family here, Cityzens. Once a Blue, always a Blue."
A huge figure
City football chief Hugo Viana paid tribute to Ederson, who leaves as the Premier League's most decorated goalkeeper.
He said, “Ederson has been an incredible servant to Manchester City.
“The fact no goalkeeper has ever won more Premier League titles says everything you need to know about his quality and consistency in a City shirt.
“He has been a huge figure in all our successes over recent years, and his skills and bravery have been crucial in helping City play the beautiful football we have seen.
“He has truly cemented his place in the history of Manchester City, and we all wish him well in the next chapter of his career.
"And he leaves us knowing that he will always be welcomed at this football club.”