Anton Volchenkov: Future Capital?

Unrestricted free agent (UFA) hunting season begins July 1.  The Washington Capitals do not have tons of holes to plug that they can't fill from within.  They could stand to upgrade in a couple of important positions, most notably the #2 center position and some would argue the team needs the ever-elusive "shut-down" defenseman, also called a "minute-muncher" or a "crease-clearer."  The #2 center vacancy is real, but how real is the need for another defenseman?  I would argue the Capitals do not need another big-time defenseman and the real vacancy is at the #6 defenseman spot. 

Minute-Muncher

Crease-Clearer