So, let's fast forward a bit to next year. Now that they have demonstrated that a top FA will come to Boston, what do you think happens next?
http://hoopshype.com/2016/05/14/nba-free-agency-2017-the-top-players/Looking at this list, I think Hayward and Millsap will be targets next summer. That would give them a third star, and they would stlil have all of the assets for a potential deal for a 4th guy.
So, if I were Danny:
1) This year, filler on 1 year deals (resign Amir, Jonas, etc.)
2) Play the draft again the same way as this year. See where we land in the lottery, and try to make a deal for Jimmy Butler or whomever comes available. If it's a top 1 or 2 pick, up the asking price.
3) Target Hayward and Millsap next summer.
Big three is old thinking -- we now have two stars -- I think we can realistically end up with four (trade the BKN pick for 1, FA as the other).