With Nate Schierholtz and Kevin Gregg still on the team, I doubt the Cubs are done trading players for prospects. We've witnessed trades of Scott Feldman, Matt Garza, and Alfonso Soriano so far. While a similar fire sale should have happened years ago, like any Cubs fan, I'm looking toward the future.
Hey, it's all I've ever had. I was born after 1907.
Let's take a look at options for the future with estimated times of arrival (in parentheses) based from the MLB webpage that details the top twenty prospects of the Cubs. You have to click on the "20 by Team" tab.
2B: Barney, Castro, or Gioskar Amaya ('16)
SS: Castro, Javier Baez ('14), Arismendy Alcantara ('14), or Junior Lake
3B: Mike Olt ('13), Josh Vitters ('13), Javier Baez, Kris Bryant (?), Christian Villanueva ('14), or Junior Lake
OF: David DeJesus, Brett Jackson ('13), Matt Szczur ('14)
OF: Junior Lake, Albert Almora ('15)
OF: Nate Schierholtz, Cole Gillespie, Mike Olt, Ja-Hoon Ha ('14), Jorge Soler ('15)
Starter: Jeff Samardzija
Starter: Travis Wood
Starter: Edwin Jackson
Starter: Carlos Villanueva, Justin Grimm (AAA), Jake Arrieta (AAA), Arodys Vizcaino ('14), Dillon Maples ('16)
Starter: Chris Rusin, Pierce Johnson ('15), C. J. Edwards ('16)
Looking at all that above, I would think the ball club might try to acquire a starters in other trades or via free agency this off season. Junior Lake, who is currently playing out of his mind, is really an infielder, but he's playing in the outfield out of need.
It'll be interesting what they do this season with the platoon of Ransom and Valbuena at third base. While both are okay, I suspect we'll see Olt or Vitters this season. If Schierhotz and DeJesus get traded before the deadline, you're looking at an outfield of Lake, Jackson, and Gillespie unless Olt or Vitters can play in the outfield. Olt has played a couple of games as a right fielder as a major leaguer. That might make some sense once (if and when) Kris Bryant is ready.