The Citizens made the announcement on their official Twitter account.
Modise joined City today (Wednesday) as a free agent after parting ways with Sundowns at the end of last season.
READ: City confirm Teko Modise signing
The 34-year-old midfielder becomes the fourth signing made by City during the current transfer period after the club announced the signing of Ayanda Patosi, Lyle Lakay and Mozambican Jeitoso.
City, who qualified for the Caf Confederation Cup after finishing third last season, will be led by former Bafana Bafana striker Benni McCarthy this season after Eric Tinkler left the club to join SuperSport United.
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