The NFL has instituted a three-day negotiating window beginning at midnight for teams to enter talks with agents of players who are scheduled to become unrestricted free agents on Tuesday. Up until this point, teams have only been able to negotiate with their own pending free agents.

During this three-day period, the prospective unrestricted free agents are not allowed to visit other teams nor are these players to have direct contact with another team's employees. All communication must be between the team and the player's agent. If a player does not have an agent, teams are not allowed to make contact until the start of free agency which is this Tuesday at 4 PM.

Also, it should be noted that teams can only approach the agents of potential unrestricted free agents. Teams cannot contact the agents of players who are set to become restricted free agents or players who have been given the franchise tag.

The Eagles have eight players whose contracts expire on Tuesday. Seven of those players are scheduled to become unrestricted free agents - long snapper Jon Dorenbos, offensive tackle King Dunlap, linebacker Akeem Jordan, defensive tackle Derek Landri, cornerback Dominique Rodgers-Cromartie, guard Jake Scott and defensive end Darryl Tapp. Safety Colt Anderson is in line to become a restricted free agent. The Eagles have to decide whether to tender him a one-year qualifying offer which would still allow Anderson the opportunity to negotiate with other teams, but give the Eagles an opportunity to match an offer sheet.

The salary cap is set at $123 million for the 2013 season. According to Jason LaCanfora of CBS Sports, the Eagles are currently $33.4 million under the salary cap and have the resources to be players in free agency if they choose to do so.

Make sure to follow us on Twitter @EaglesInsider