The Carolina Hurricanes started free agency by locking up their big trade acquisition for the long haul and bringing back a familiar face. They might not be done there. Carolina agreed to a 10-year contract extension with center Jordan Staal on Sunday, brought defenseman Joe Corvo back for a third stint with the team and acknowledged it made offers to the two biggest prizes in the free-agent pool -- forward Zach Parise and defenseman Ryan Suter.
