CHICAGO  - Chicago Cubs chairman Tom Ricketts says the team needs to install a 6,000 square foot video board at Wrigley Field because it would bring in much needed revenue.

Addressing the City Club of Chicago Wednesday, Ricketts said the Cubs could be making $20 million a year more in ad revenue. He says the video board proposed for the left field is "midsize' compared to those displayed at other major league ball parks.

Nearby rooftop owners, who charge fans for access to watch Cubs games, worry such a board would block their views and have vowed legal action if that happens. Ricketts says studies indicate the views would only be blocked minimally, if at all.

Ricketts says the team will file its proposal with the city on Wednesday.

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