St. Luke’s Health System and Greenstone Properties have reached terms on a deal for 11 acres of land near the corner of Americana Boulevard and Shoreline Drive in Downtown Boise. Greenstone hopes to build a stadium on four of those acres and residential, office, retail and parking space on the other seven. The Hawks, the Treasure Valley’s only minor-league baseball team, would be the stadium’s primary tenant. A minor-league soccer team also might play there, as could Boise State University teams. The stadium also could serve as a venue for events such as concerts and festivals.