Since 2006 all three receivers mention have all been in the league now lets look at production.
Gaffney in last three years 85 receptions for 1059 yards and 8TD's
Washington in the last three years 10 receptions 118 yards and a TD
Furrey in the last three years 178 receptions, 1931 yards and 7 TD's
Furrey 2008 stats
18/181 0 TDs, released.
Gaffney 2008
38/468 2 TDs
Why do you think Furrey was RELEASED? He was CUT. If hes so good, why is that? The team has 40M worth of cap space and they CUT him.