<p>Mayor Brandon Johnson’s top adviser insisted Friday that there’s still a chance to keep the Bears in Chicago because there are major hurdles with stadium proposals in both Arlington Heights and Hammond, Indiana.</p><p>Senior mayoral adviser Jason Lee said even if the Illinois General Assembly approves the massive property tax break and the roughly $855 million in infrastructure money needed to ready Arlington Heights' former racetrack site for development, building a domed stadium there is no sure thing.</p><p> Question marks also surround Indiana’s more generous and tax-laden offer to help the Bears build a dome in Hammond on land that once served as an industrial dump site.</p><p>“I’m not saying there’s no world in which they work. I’m saying that both of them have challenges... And as long as that remains the case, then there’s always the realistic possibility that you have to make a pivot” back to Chicago, Lee told the Sun-Times.</p><p>With two weeks to go before the General Assembly adjourns its spring session, Chicago is nowhere in the stadium conversation — except at Johnson’s City Hall.</p><p>The Bears and NFL owners have their sights set on Arlington Heights and northwest Indiana, and Gov.