We might be better off adding nobody.
Every single mid-tier free agent is going to get overpaid this year. Everyone has capspace, there's a ton of parity in the Eastern conference, and there is a severe lack of top-tier and second-tier talent on the market. Even *relative to the new cap*, players are going to get paid too much. So I hope we do not sign anybody to a long-term deal; retain flexibility for next year, when there's a long list of stars and superstars to be had.
We should start by retaining Amir and Jerebko, who are on bargain contracts. Then we could offer one-year contracts to Sully, Turner, or others. We could also make a trade, maybe for someone like Thaddeus Young, who would replace Sully, or Nikola Mirotic, who would replace Jerebko. But the priority should be retaining flexibility for 2017.