But City captain Tevez, in a statement issued by his agent Kia Joorabchian, stressed he had "no personal issue" with manager Roberto Mancini despite their seemingly fractious relationship, and thanked owner Sheikh Mansour for his "understanding and support".
It is understood that one of the people Tevez has fallen out with at Eastlands is City chief executive Garry Cook.
Earlier Sunday, City confirmed they had rejected a transfer request from the Argentina striker, who has scored 33 goals in 50 Premier League games since joining from arch-rivals Manchester United before the start of last season and who is not due to leave Eastlands until 2014.
However, Tevez appeared intent on leaving, saying in his statement: "I can confirm I have handed a transfer request to the chairman of Manchester City Football Club.
Now I need to clear my head and think because this is an important part of my career," the 26-year-old added.
"My feelings have not changed and it is regrettable that we have reached this situation.
"But it is something I have felt for some time and have spent many hours thinking this through."