The 26-year old is desperate to play in his homeland but is contracted to City and is unsure of what will happen.
"This club has only brought me joy so far. I won two Brazilian championships [in 2002 and 2004] here before and now we've won the Copa do Brasil.
"I have to talk to Manchester City about what will happen with me in the future. I have a contract with them and that has to be respected. My heart is with Santos, but if Manchester City don't want me to stay here, I have to respect that."