No, it wasn’t Andre Dawson in the Ivy. From the Chicago Tribune:
Former Cubs pitcher Kerry Wood discovered a man’s body floating in the water while out in Belmont Harbor, police said. Wood was paddle boarding around 11:10 a.m. Monday when he saw the body, according to police. “Mr. Wood immediately notified 911 of this discovery,” according to a police report.
Turns out it was a patient who had been reporting missing from a nursing home.