Jovetic has struggled for fitness since joining City from Italian side Fiorentina in the summer.
Jovetic told Italian newspaper Tuttosport: "I arrived at City behind in my physical condition and so I have always been behind the shape of others.
"Then I went to the national team and I got injured again, thus losing more time."
"If I would have not gone to Manchester City, I would have gone to Juventus," he continued.
"This summer, the situation was simple: I had a price of €30 (£25.4) million, but I never said that I wanted to go to Juve.
"I only asked to leave Fiorentina and I was pleased. The interest of Juventus? I was aware of the deal, I read about it on the newspapers and I know that they were speaking with my agent.
"In the end, however, I chose to go abroad and now I'm happy. I don't regret the choice I made."