CHICAGO — Following Lollapalooza’s long and lucrative run in Chicago, the future of the flagship music festival is still to be determined, with its decade-old contract ending this year. But as producers negotiate with city officials on a pact to keep Lollapalooza in town, some residents, aldermen and parks advocates wonder if they’ll have any say in the decision — especially after the Chicago Park District quietly executed a one-year contract extension for this year’s festival without any public discussion or vote. Grant Park will welcome more than 170 acts and hundreds of thousands of music l…
