Gov. Pat Quinn has objected to a gambling bill that would allow new casinos in Chicago, southern Cook County, Lake County, Rockford and Danville.
Quinn has called it "top heavy."
Cullerton says all the new casinos should be built, but he's willing to cut the number of gambling positions within those casinos.
"We can improve that bill," Cullerton said. "The gaming board has made some suggestions we can incorporate to make the bill a little smaller than it is now."
Cullerton also said he would tighten the bill to give the gaming board more regulatory control. He said the compromises could lead to agreement among lawmakers.
The Illinois Gaming Board was scheduled to meet Tuesday.