Cohen has reportedly told Madigan of his intention to run as an independent candidate.
The 43-year-old won the February 2 primary to share the ticket with Governor Pat Quinn. But Cohen quit under pressure after being accused of abusing his ex-wife and was arrested in 2005 for holding a knife to the throat of an ex-girlfriend. Cohen denied the allegations.
ABC7 Chicago news parner the Daily Herald reports that Governor Quinn ran into Cohen at a White Sox game recently. Quinn reportedly says Cohen told him to 'get ready for a big surprise.'
Quinn was asked how he felt about another candidate joining the race.
"I believe in competition. I think that makes you a better person, both in politics and everything else in life. So, anybody wants to run, they qualify, is free to come aboard, and it's going to be a robust campaign of ideas," said Quinn.
The governor also said he was very disappointed that his Republican opponent, Bill Brady, only made his tax returns available for three hours Friday in Springfield.
Quinn made his comments at the Illinois Warrior Summit. Businesses, community and government agencies were at UIC to provide assistance and benefits information to veterans.
Cohen is expected to make an announcement soon about his run for governor.