As the Cubs near Spring Training, the roster seems pretty set.  There will be some competition for the fifth starter spot, and in the bullpen.  The 13th non-pitcher has been the subject of some debate on this site. 

If you could advise Jim Hendry to acquire ONE MORE player before the season, who would it be and what do you think it would cost? 

For me, the answer has been the same all offseason: Ben Zobrist.  Tampa will not be eager to deal him unless Reid Brignac seems ready, but they are somewhat redundant players.  Tampa doesn't have a lot of holes, but might be open to acquiring some young bullpen arms.  I'd love for a couple young Cubs to have great Springs, like Guzman or Stevens, and be a credible offer.  I would offer something like Guzman, Tony Thomas, and Darwin Barney for Zobrist.  Ben would be the primary backup at SS and 3B, replacing Hoffpauir as the prime LH pinch-hitter. 

Maybe you think a shut-down LH reliever is more important?  Another starting pitcher, so Marshall, Heilman, and Gaudin will all be in the pen?  A veteran LH hitter who can play the infield corners?