Vancouver, B.C. real estate developer Onni Group completed its acquisition of 200 N. LaSalle St., a 645,170-square-foot office building in Chicago, IL, for nearly $157 per square foot or $101 million, according to published reports. Younan Properties said it sold the trophy high rise as part of its de-leveraging strategy to recycle capital and strengthen its balance sheet. The company owed nearly $90 million on a loan set to mature late last year.