According to mlb.com, the Cubs will have several extra players available tomorrow.
...Micah Hoffpauir, Koyie Hill, Michael Wuertz and Casey McGehee from Triple-A Iowa, and activate Jon Lieber and Angel Guzman from the disabled list.
McGehee is the only surprise, and Kevin Hart is also expected to get the call at some point. The extra right-handed bat off the bench is needed, and McGehee's on the 40-man roster already (Jason Dubois, who has been hitting bombs in AAA, is not), and three extra arms is probably enough for Lou and Larry to keep busy. Hopefully. Felix Pie may still get the call before the end of the month.