Thompson says he hasn't heard of any deals by Illinois Sports Facilities Authority to link Wrigley's name to a corporate sponsorship.
Thompson is chairman of the agency that has been in negotiations to buy the park from the Tribune Company.
He said Wednesday after a meeting of the ISFA board that the agency still wants a deal that wouldn't involve taxpayer money and thus could gain approval from city and state officials.
Tribune Chairman and CEO Sam Zell hopes to sell Wrigley separately from the Chicago Cubs.
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