If the trade was based on $$ - it was only half the reason - IMHO
Sammy (shoulder, ankle, rib, groin, hip, thigh, calf, ankle, foot) Watkins had other issues that I suspect were not totally behind him.
He did admit in an ESPN interview that :
WHY WHY WHY is he NOT IN SHAPE? FCOL
ALSO - There is the whole injury thing... http://sportsinjurypredictor.com/player/sammy-watkins/6937