Arsenal will face Pep Guardiola’s side at 4:30pm on Saturday in what is expected to be a crunch tie at the Etihad stadium.
Despite arriving at the club just a four days ago, Arsenal manager Mikel Arteta insisted Partey was in contention for the game.
However, the Spaniard has named the Ghanaian on the bench, although he could still come on as a substitute.
Arteta preferred the midfield paring of Dani Ceballos and Granit Xhaka in his starting line-up to face Man City.
Partey joined Arteta’s side from Atletico Madrid on transfer deadline day in a deal worth £45 million.
The 27-year-old will wear the number 18 shirt at Arsenal, and will reportedly earn £250,000 per week.