Chicago Bears outside linebacker Khalil Mack on Monday sold his six-bedroom, 6,100-square-foot mansion in Glencoe for $3.9 million. A six-time Pro Bowler, Mack, 30, played in seven games for the Bears this year before undergoing season-ending foot surgery. In Glencoe, Mack made a slight profit on the 15-room mansion, which he purchased new in 2018 for $3.75 million. In June, Mack officially listed the mansion for $5 million.