Are the Celtics Building for 2018 or 2025?

The Once and Future CelticsDown 2–1 to Cleveland, is Boston one player away from competing for the title, or should it be building for a post-LeBron world? These are the questions Danny Ainge will have to answer as he considers what to do with his no. 1 pick in the draft…
Source: Are the Celtics Building for 2018 or 2025?