The organizers of events like Bonnaroo and Outside Lands are talking with city officials about using Overland Park Golf Course for a three-day festival featuring as many as 80 performers, starting in the fall of 2018. The promoters are seeking a five-year contract for what would become an annual event, for which the course would need to be closed for a total of three to four weeks. The city stands to make $1 million to $2 million a year from the event, proponents say.