The 35-year-old has not played since having his contract at Greek side Olympiakos terminated in December 2018.
On Friday, Toure's agent Dimitri Seluk said he had "decided to end his career as a champion".
"There has been a lot of confusion about my future recently," Toure said.
"I want to make it clear here that I love football and I'm still in contention to play for a few more years."
Toure moved to Greece following his release by City last summer after winning three Premier League titles, an FA Cup and two League Cups.
"Yes, I'm starting to prepare myself for coaching badges but full-time coaching is not what I'm thinking now," Toure wrote on Twitter.
"I am now ready and focused to take new challenges in playing football.
"And don't worry, once the time has come I will announce my retirement personally and officially by myself."