NFL free agency: Dan Williams says goodbye; Mike Iupati, Sean Weatherspoon sign contracts

The Arizona Cardinals have announced the addition of three new players they added in free agency. Dan Williams has also agreed to sign with the Oakland Raiders.

Williams left a kind farewell on his Instragram account, thanking fans and the Bidwill family.

I would like to thank the Bidwill family, @azcardinals coaches,staff and fans for making my dream of playing in the NFL a reality. This first class organization and fanbase made the last 5 years amazing for my family and myself. Thank you!! #Bestwishes #Appreciateit #nolovelost

A photo posted by Dan Williams (@dan5592) on Mar 11, 2015 at 11:48am PDT

With the goodbye, we wish Big Dan well and hope he plays up to all that money the Raiders have agreed to pay him.

While the Cardinals announced they have come to terms with Mike Iupati, Sean Weatherspoon and Corey Peters, we now can see they have signed their contracts.

Mike Iupati goes over his contract w/ #AZCardinals President Michael Bidwill. http://t.co/W8utxa39yi #CardsPrezPass pic.twitter.com/NLVj08cyQ2

— Arizona Cardinals (@AZCardinals) March 11, 2015

#AZCardinals LB @SeanWSpoon56 on past injuries: "I feel I'll be in a good position to do something pretty good here" pic.twitter.com/SXZQwDbSyl

— Darren Urban (@Cardschatter) March 11, 2015

Which will be the more impactful free agent move? Will it be the loss of Williams, the addition or Iupati or the addition of Weatherspoon?