Check out my latest piece for NationalFootballAuthority.comFree agency is all about the six degrees of separation. In other words,  familiarity breeds signings and trades. There was four significant  signings this week that brought back former players and coaches, which  is one of the big factors in free agency.And it will be interesting to  see how some of these players fare in their newest homes with one of  their oldest “friends.” Stay tuned, there will be more to come.