"SportsBuy.com and the National Sports Collectors Convention are offering $25,000—a briefcase with 250 $100 bills inside—to notorious Cubs fan Steve Bartman if he comes out of hiding, attends the show and signs a single autograph.

To collect the cash, all Bartman has to do is show up at the Donald E. Stephens Convention Center in Rosemont at 1 p.m. next Thursday, prove his identity and sign a photo of the play. It would then be auctioned on the Web site, with the proceeds going to a Chicago-based charity, according to a news release for the event.

"No one in sports memorabilia history has ever been paid $25,000 to sign one autograph—not Michael Jordan, Muhammad Ali, Joe DiMaggio, Babe Ruth, Lou Gehrig, or any other athlete," said Mike Berkus, co-executive director of the National, who also offered to provide security for Bartman.

Will he do it? Stay tuned."