The Cubs have transacted half a zillion minor moves in the last week. We'll take a page from Phil Rogers and use the +/- system, because it actually means something in this context (i.e., how many roster spots are open).
Outrighted to Iowa (i.e., off the 40-man)
- RP Blake Parker
- SP Justin Germano
- OF Joe Mather
- RP Marcos Mateo
- SP Jason Berken
- RP Miguel Socolovich
- IF Adrian Cardenas
Claimed off Waivers (by another team)
- RP Manny Corpas (refused minor league assignment)
- MVP Shawn Camp
- RP Carlos Gutierrez (waivers from Twins)
Players stashed on the 60-Day DL
That's a net -7 for the Cubs 40-man roster, though Stewart may just be released if they don't think that they want to re-sign him. They'll have to add a few players to protect them from the Rule 5 draft, though given the state of the Cubs system I can't imagine it would be that many. Most of the Cubs guys that are worth stealing are already on (Lake, Sczczcur, Vizcaino, Soler), and the only players I can think of off the top of my head that might be added are Christian Villanueva (3B from the Dempster trade) and maybe the shadow of Trey McNutt. It also sounds like RP Marcelo Cerrano, acquired in the Jeff Baker deal, should be elgible. Most of the Cubs top players are too far down in the system and shouldn't have enough service time to qualify for rule 5. Even if the Cubs do add more minor leaguers and/or FAs, the likes of Casey Coleman, Mike Beliveau, and Brooks Raley aren't going to be tough drops from this roster.
Also of note is that Randy Wells (who was outrighted back in June following an injury) won't be finding his way back on the roster, as he elected minor league free agency.