The 24-year-old started just six games in all competitions in what proved a largely anonymous first season following a £25m move from Fiorentina.
However, Jovetic has emerged as one of the Citizens' early stars this season, scoring twice in three Premier League outings, but the forward pledges to do more to repay his debt to the club.
"Last season I had so many problems," Jovetic told Oslobodjenje. "I was late into preparation and I just could not catch my teammates. And then there were all those injuries. Just as I recovered I would get hurt again.
"But I guess there were things that I was doing right, because the club wanted me to stay. They believed in me - president, manager, teammates. And it means a lot.
"They told me they want me to stay for which I'm very grateful. I know what I can do and how much I can give my club. So I hope to repay the trust."
The reigning league champions sit fourth in the table after picking up six points from their opening three games of the season.