"I feel good. I had to rest a bit because I had a little tear on one of my hamstrings," Sagna told the club's website.
"I had a long season last year, so I need to take care of my body, but today I feel great.
"I am looking forward to Saturday. I am going to be giving my maximum in the training sessions to feel as fit as possible, then the manager might have to make some choices."
Sagna believes City have the experience to take control of the match.
"We're going to try to dictate the game. Every single day we're learning more and more but we're all focussed to look forward," Sagna added.
"We're going to have to go through games like Saturday, compete every single game. As players we have to push ourselves. We have good competition between us."
City sit above United on goal difference at the top of the standings after both sides won their first three league games.
(Reporting by Ian Rodricks in Bengaluru, editing by Ed Osmond)
