Teams are half way through spring training. General managers have a pretty good grasp on what players will break camp with the major league squad. This time is used to stretch out starters, get bullpen arms into a routine, and hitters working on their timing. Teams usually only have one or two open spots to fill during the final 10 days of camp, usually referred to the 25th man (bench player) and a final pitcher for the bullpen.
It is rare for trades to happen late in spring training. Teams have concentrated so much on their own organization and talent to focus in on potential trade partners. Teams do scout other organizations, but mainly to get updated books on other team prospects.
However, if a preseason contender is beset with early injuries, like the Tigers with OF Dirks or the Braves who lost two starting pitchers, a last minute trade is a possibility.
If the Tigers want to replace their outfielder with a proven veteran, Nate Schierholtz's name has come up in recent reports. Apparently the Tigers inquired at last year's trade deadline. Since Schierholtz is in the final year of his Cub contract, it would make sense if he has any trade value to move him. The Tigers are still in "win now" mode and may give up some pitching prospects.
Likewise, the Braves are also in "win now" mode after re-signing many of their young players to extensions this off season. Number one starter, Kris Medlen,
left his start with a forearm strain. With Medlen--who already has one
Tommy John surgery on the punch card--and the Braves awaiting results
from an MRI, Brandon Beachy left his spring start a mere 24 hours after
Medlen. Also a Tommy John recoverer, he left with tightness in his
throwing elbow. In the span of a day, the Braves went from a young, deep
rotation to one on the verge of falling apart before they break from
Spring Training. Two bad MRIs, and the Braves would suddenly,
breathtakingly be stripped of their status as favorites for the NL East
crown. As insurance, the Braves traded for journeyman starter/reliever Zach Stewart from the White Sox system. But clearly, Stewart would not be a long term solution.
UPDATE: The Braves have signed free agent Ervin Santana in a one year deal for $14.1 million (the same money as the qualified offer he rejected from his previous club).
The weak point is lack of depth of major league starters, so Jeff Samardzija's name will come up as a possible solution. There is no question that the Shark is frustrated with the Cubs. He wants to play for a winning club. The Cubs and his representatives are at an impasse on a contract extension. At age 29, Samardzija's championship window is starting to close.
The Cubs are gearing up for another 100 loss season, so losing Samardzija or Schierholtz is not going to make a great deal of difference. There are plenty of journeymen outfielders in camp to platoon in RF. Chris Rusin, Carlos Villanueva or Justin Grimm could take Shark's rotation spot.
The plan is that Jorge Soler would take the long term RF spot, but Soler is slated to start this year at Class A again. That projects to not being major league ready until 2017. The Cubs really do not have a sure fire "ace" in the minor league system who would replace Samardzija as an opening day starter/innings eater. Even if the Cubs take the best college pitcher available in this year's draft, he will not be ready for at least two years. In essence, the Cubs "rebuild" plan is only halfway to completion.