Who should I trade? In need of a RB

Since saquan went down, I’ve been screwed! I drafted saquan and Mixon as my only RBs (thinking saquan is a horse and doesn’t get injured) Now I am desperate for RBs! The only guy in my league that’s willing to trade has Fournette and Carson… what WR would you rather keep for the rest of the season… Amari Cooper or Lockett… cooper has played awful teams and I wonder how he’ll do and Lockett seems to be hit or miss?