Even though it has welcomed a consent decree on the Chicago Police Department, the city of Chicago is having “arms-length negotiations” with the Illinois Attorney General’s Office on it, the city’s top attorney said Tuesday.In a sit-down interview with the Daily Law Bulletin, Corporation Counsel Edward N. Siskel said he couldn’t discuss the specifics of the negotiations, but that the talks are “fairly in-depth, involved.”“There are a whole range of issues about the best way …