The young private equity mogul already has major stakes in three other professional sports teams — and he's building what's thought to be the most expensive home in Illinois history.

Jerry Reinsdorf will have the option to sell his controlling interest in the Chicago White Sox to Justin Ishbia from 2029 to 2033.

Phoenix Suns and Mercury owner Mat Ishbia isn’t the only one in his family tree playing the high-stakes game of pro sports franchise ownership. His brother, Justin Ishbia, is getting in on the action too, having reached a long-term investment agreement that positions him to eventually take controlling interest of the Chicago White Sox.