If you have a good team right now, I'd rather have CMC. He was business as usual as the RB3 prior to getting hurt, and the offense started using the RB in the passing game more last week, which I think has zero to do with Mike Davis. CMC could still very easily be the #1 fantasy player going forward, so unless I needed help now, or had a big hole at WR, I'd be patient.
I'm a 3-0 CMC owner(with a need at WR) and would probably reject this offer.
Side note, I prefer Lockett to Hill. I think both guys are more 1A's than unquestioned #1s, and just really love what Wilson is doing.