
There is a good case to be made that with the advent of the NBA salary cap players are actually underpaid. In the context of that cap, however, quite a few players earned more than the value they brought to their clubs. The Boston Celtics are not excluded from that reality.
The folks over at HoopsHype have put together a metric to try to measure such things. The real value metric was developed by HoopsHype analyst Alberto De Roa. In a recent H/H article, authors Sam Yip and Frank Urbina sorted the top 30 players who have fleeced teams in terms of their real value.