Spain's all-time leading goalscorer, on loan from New York City, arrived in Australia on Sunday and has already started training with his new team-mates.
John van 't Schip appears set to use Villa at Allianz Stadium on Saturday, but the 32-year-old may start on the bench.
"I wouldn't be disappointed at all [if I started on the bench)," Villa said on Tuesday.
"I'm the one that needs to adapt to the team. We've still got more sessions to come before the game.
"It's up to the coach, I'm just a member of the team. There's a squad of 23 players, 11 on the pitch and the objective is to enjoy my experience and contribute and it's not up to me."
City, who finished bottom of the league last season, need to make the most of Villa during the striker's 10-game stint in Melbourne.
Graham Arnold's Sydney are also among the title favourites, even though Alessandro Del Piero has left the club.
Kevin Muscat's Victory side have made multiple good signings, including bringing in 2011-12 golden boot winner Besart Berisha from the Brisbane Roar.
Reigning champions Brisbane Roar host Josep Gombau's Adelaide United on Sunday in an intriguing round one match-up.
