Mayor Cherelle L. Parker said that the city will “start from scratch” on a new community benefits agreement, canceling the hotly debated plan with the 76ers and making way for a new one now that the arena is planned for South Philadelphia.

Mayor Cherelle Parker said she supports plans to keep the Sixers basketball team in South Philadelphia, instead of building a new arena in Center City.

The team, whose ownership group is led by investor Josh Harris, said it had formed a 50-50 joint venture with Comcast to replace its arena in the South Philadelphia stadium district by 2031. Comcast will also take a minority stake in the team and work together on the WNBA bid, the parties said in a joint statement Monday.