Yasiel Puig is not Rusney Castillo. I suspect the Boston Red Sox once considered Castillo quite similar in their internal projections of future success, but we know how that eventually panned out. But the Red Sox did have a shot at the real thing according to a recent article in the Boston Globe by Alex Speier.
The Dodgers and Red Sox contemplated a swap of left-handed hitting Jackie Bradley for Puig. A straight-up transaction that was “quickly” dismissed by the Red Sox. The reasoning is twofold with the first being years of control.