Captain Vincent Kompany says he will leave Manchester City after Saturday's FA Cup final win over Watford.
The 33-year-old defender won four Premier League titles, two FA Cups and four League Cups during 11 years at Etihad Stadium in which he scored 20 goals in 360 games.
By beating Watford 6-0 at Wembley, City became the first men's side to complete the domestic treble in England.
"Countless of times have I imagined this day," he said. "After all, the end has felt nearby for so many years.
"Man City has given me everything. I've tried to give back as much as I possibly could."
He scored his final goal against Leicester on 6 May, a brilliant strike from 25 yards that was voted as goal of the season on BBC Match of the Day and took City to within one win of the Premier League title, which they sealed on the final day of the season with victory at Brighton.
"The time has come for me to go now," Kompany said.
"As overwhelming as it is, I feel nothing but gratefulness. I am grateful to all those who supported me on a special journey, at a very special club.
"I will never forget how all Man City supporters remained loyal to me in good times and especially bad times. Against the odds, you have always backed me and inspired me to never give up."