I love Cousins, but I wouldn't give up multiple unprotected firsts for him because even acquiring Cousins doesn't make this team a contender and if you give up a ton to get him, you limit your ability going forward to make the team a contender. Now if you aren't giving up the farm you have to do it. For example, I'd do something like Sullinger, 2015 BOS 1st (assuming not top 3), 2016 BRK 1st, 2017 BOS 1st (lottery protected), and salary filler. I think that would be reasonable value for Cousins (if he was demanding a trade) and would still leave Boston enough assets to build a contender.