The Washington Capitals have several important defensemen whose contracts will expire on July 1. Young stars and restricted free agents Mike Green and John Carlson must be kept since they are still improving and are talented offensively.
Veteran Dennis Wideman is an unrestricted free agent, and probably won’t be kept since he’s a defensive liability.
Losing any one of these defensemen would hurt the Capitals, but keeping Green and Carlson should be a priority.