When Forest City Ratner released new designs by SHoP Architects of the Barclays Center yesterday, it was seen as an effort to right a listing ship. But no sooner had those copper-hewed renderings hit the presses than the city’s Independent Budget Office released a report [PDF] today noting that the arena will cost the city $40 million in revenues over the next 30 years as a result of financial incentives granted to the developer. Furthermore, the city lost a potential $181 million in lost opportunities through tax breaks and incentives provided to the developer, which cost the state $16 million and the MTA $25 million, though the report also notes both will release a net gain of $25 million and $6 million, respectively, if the deal goes through.