Bertuzzi returned a first and a 4th last season with pretty much the same level of production.
I ain’t saying he would return that now but to call him a cap dump is asinine.
I think you are generalizing a lot here to make this sound more outrageous than it is.
Last year, Bertuzzi was only a season removed from a year where he scored 30-goals and flirted with being a point per game player.
Despite playing on an underwhelming Red Wings roster, he was on a 40-point pace when he was traded.
Last year, split between Detroit and Boston, he had just eight goals and this year, despite high end line mates, he has just six goals and is pacing for 34 points. He's in decline for the second year in a row, so pointing to last years return, and pretending that he's producing at the same level, isn't really going to give you an accurate take on this.
I think it's extremely unlikely that the Kings would trade away one of their UFA's and acquire one in return, unless it was a cap dump situation.