That being said, your going to have to look deep in the free agency to find yourself a RB.
Don't do it
Yikes...you are weak at RB man. I know sproles had a great first week and your gamble paid off there, but Shady is going to get most of the RB points from the eggles. I still like sproles, I own him in most of my leagues, but as your RB2 for every week, you are in no position to trade stacy.
I say you stand pat on your recEivers and try to upgrade RB.
Looking at your team I think you're going to have to pull off some good management to make your playoffs.
Some under valued RBs you might be able to get off someone for cheap are Joique Bell, Hill and Ellington. I know Ellington is a huge health risk, but honestly I think you've got to gamble at this point.
Anyways, I'm starting to ramble, but the simple answer is no, you can't give up any RB strength at this point.
I dont have much depth in the RB department, but have been sent a trade for Zac Stacy and Steven Jackson, in return for Julio Jones WR.
My Team is
QB: P Manning
RB: Daren Sproles
RB: Zac Stacy
WR: Jordy Nelson
WR: Julian Elderman
TE: Vernon Davis
W/R: Justin Hunter
Bench:
Steven Jackson RB
Terrence West RB
Danny Woodhead RB
Riley Cooper WR
Greg Jennings WR
Brian Hartline WR
Andy Dalton QB
Is Zac Stacy worth holding onto when im weak in RB, or should pick u[ another WR and try to make trade with another team for a RB starter???