Chicago Bears Purchase Agreement | Arlington Park | Chicago Bears sign purchase agreement for Arlington Park Bears sign purchase agreement for Arlington Park The Bears have signed a purchase agreement for the Arlington International Racecourse property in Arlington Heights, The team is expected to announce the news Wednesday morning Chicago's mayor did comment. just as the Bears view this as a business decision so does the City. This season, Soldier Field signed a major contract with the Chicago Fire and just last weekend Soldier Field hosted the Shamrock Series -- both of which are lucrative for the Chicago Park District and local economy." Arlington Park ran what was largely believed to be its final races Saturday amid the ongoing sale process for the 326-acre property at Euclid Avenue and Wilke Road. Track owner Churchill Downs Inc. is selling the expansive site for redevelopment, and has been combing through proposals and offers since a mid-June deadline.