Garza, who came out of Saturday's game against the Cardinals after three innings, was scheduled to start on Friday, but Cubs manager Dale Sveum said on Monday that Travis Wood will likely start that game instead. Wood will be pitching on normal rest because of an off-day Thursday.
"Garza is better today -- there's some improvement," Sveum said on Monday. "[His arm is] not quite extendable, but he doesn't seem to be concerned about it. I think [Tuesday] will be the big day to do the evaluation. That's when we'll have to make some decisions and line up stuff."
Garza, 5-7 with a 3.91 ERA, will not throw a bullpen session on Tuesday. The timing of that session is still to be determined.
"He seems very optimistic about it, and he doesn't seem concerned that we'll have to put him on the [disabled list]," Sveum said. "As much as he competes, he knows the ramifications of hanging out and putting everybody in harm's way in the bullpen, and who are we going to start and all that. It's something we have to make a decision on in the next two days."
Garza is also the subject of trade rumors; the Dodgers are reportedly interested in the right-hander. A report on Monday said the Dodgers would trade righty Zach Lee -- the No. 1 prospect in the Dodgers' farm system, according to MLB.com -- to the Cubs in a package. Garza would be under team control through 2013.