I know its early to start thinking of free agent moves, but some players that caught my eye on the free agent market that won't cost much, but will help turn the Cubs into a respectable team.
2B Omar Infante-Not as good of a glove as Barney, but still above average with a much better bat
C Jarrod Saltalamacchia-Would be a good platoon with Castillo or a solid starter if the Cubs decide to move Castillo
OF-Corey Hart-Can provide good pop to the order and will come somewhat cheap because of prior injury concerns
OF-Rajai Davis/Nate McLouth-Either of these guys would be a nice addition to the top of the order with pretty good speed.
SP-Not many good options besides Garza which is probably unlikely. If Colorado doesn't extend Jorge De La Rosa's option, he could be a nice lefty addition.
Maybe add a bullpen piece or two, but the bullpen has been surprisingly better with Strop and getting rid of Marmol.