The Cubs won't have to compensate the city, except for the $4.75 million already promised for Wrigleyville community improvements, for the $500 million Wrigley Field renovation, which will take up parts of public streets and sidewalks, City Hall officials said Wednesday.

As part of the renovation plan, the iconic field's left- and right-field walls will be pushed out by a maximum of 10 feet. The expansion will destroy a Sheffield Avenue sidewalk as well as a traffic lane on Waveland Avenue. The team plans to set up a 5,700 square-foot Jumbotron in the ballpark's left field and an advertising sign in right field.

Sources in the Emanuel administration told the Chicago Sun-Times that additional compensation from the Cubs is not necessary and the $4.75 million is enough.

Taxpayers saw $900,000 in compensation back in 2009 for a previous expansion when the Cubs decided to push out the outfield walls, encroaching on public sidewalks, for more bleachers.

Julian Green, a Cubs spokesman, told the newspaper that the mayor's recent concession to forgo additional compensation for taking out the public amenities is a fair move due to the “significant economic benefit” that will result from the renovation.

An anonymous mayoral aide said the project's construction is expected to begin in November.

Another anonymous Emanuel adviser told the paper, “The mayor is meeting his commitments and expects the Cubs to do the same. But, we also are encouraging them and the rooftops to work out their differences.”