The Cubs want to increase their allotment of night games to 30, but Chairman Tom Ricketts says that won't happen in 2013.
The restriction on signs comes from an ordinance that gave Wrigley Field landmark status.
Mayor Rahm Emanuel says the city won't relax the ordinances until the team and rooftop owners come to an agreement.
But Ricketts says the team and the city have made progress on relaxing ordinances to allow more revenue.
