The England number one was warned his chances at the Etihad Stadium would be limited this term by Pep Guardiola, and he subsequently sealed a season-long loan move to Torino.
City then drafted in Claudio Bravo from Barcelona as Guardiola stressed he wanted a “ball-playing goalkeeper” to fit in with his philosophy.
Hart says that he was treated professionally by Guardiola but insists he is keeping his options open over a permanent move away next summer.
"I'm not here to prove what I can do, I'm here because I need to look elsewhere and I didn't have a chance to sort anything permanently," he said in an interview with Sky Sports News.
"The way I look at it, I want to do as well as I can for Torino and if somebody comes in for me I don't think Manchester City are going to stand in my way.
"I came in after the other players because of the Euros, and when we first had a conversation [Guardiola] said he had his reservations about me. I shook his hand, I said it was professionally honest, but not what I wanted to hear.
"I said I wanted to work for him and see what happens but I got the impression that it wasn't really going anywhere. I got the feeling I wasn't going to play. I spoke to the chief executive and said, 'You want me to go don't you?' He didn't stop me with what I was saying."