Mayor Michelle Wu blasted the Kraft Group’s proposal for building a stadium in Everett to host the New England Revolution, calling their mitigation offer to Boston an “unserious proposal” — criticisms the Revolution’s president and Everett mayor pushed back against.

Mayor Michelle Wu is turning up the pressure yet again on the Kraft Group to do more to offset the impacts on Boston of a soccer stadium planned for the New England Revolution on a site just over the city line in Everett.

Everett Mayor Carlo DeMaria is hoping this former power plant will be torn down for the new soccer stadium, but it’s taking longer than expected to negotiate a plan with the city of Boston.