If the Celtics could trade Pierce one up for Luol Deng, Danny Granger, Marc Gasol, Andrew Bynum, Andre Iguodala, Dwyane Wade, Lebron James, Kevin Durant, Kevin Love or Pau Gasol or get some young stud like Anthony Davis, Michael Kidd-Gilchrist, Kyrie Irving, or Greg Monroe with a few other players as part of a deal, I would trade him because it would be in the best interest of the Celtics.
That said, I only do those deals if it looks like this team can not definitely compete this year. Oh, and I do the LBJ and KD trades tomorrow, regardless.