Realistic Trade Targets

Hey guys I feel that I need another really good running back in order to push my team over the edge and be a true contender. I’m currently tied for first in my division, but second overall. I love my receivers so who would be a realistic RB target given my situation?
QBs: Phillip Rivers, Russell Wilson
RBs: Saquon Barkley, Jordan Howard, Kerryon Johnson, Corey Clement, Ito Smith, Buck Allen
WRs: Antonio Brown, Davante Adams, Jarvis Landry, Emmanuel Sanders, John Brown, Nelson Agholor, Tyler Lockett
TEs: Trey Burton, Evan Engram
What do you all think? Any advice would be appreciated! It’s a full point PPR league and we start 3 RBs & 3 WRs plus a flex. Thanks!

I would try to go AB and Clement for Barkley.
Adams is a top 5 guy, and Landry/Sanders/Brown are WR2s with WR1 weeks. So, go get a stud RB

Dalvin Cook could work out nicely. They have been more careful at giving him time to get right than Jags did with LF.