Councilman Ben Kallos (D-Manhattan), who represents the Upper East Side district where the rezoning is being proposed, said the benefit is just one more sop de Blasio is offering a well-connected developer.

Kallos said that “$100 million is a lot of money. It comes out to more than a billion in subsidies over decades, and I want to know how long it’s going to take for the city to get a return on our tax dollars because I don’t think we ever will.”