Trade Conner for Chark and Sanders? Or counter?

I received new trade offer, same league (14 team SuperFlex)… someone offered me DJ Chark and Miles Sanders for James Conner. My initial reaction is REJECT but don’t know if there is a way to make it workable. He has Kupp and Montgomery. My challenge would be my RB strength… Conner is my RB2 after Zeke, and my other RBs are Royce Freeman and Chase Edmonds. Plus, the 2 for 1 means I’d have to cut another player (likely Coutee).

Here’s my team’s full roster: Winston, Brandin Cooks, Keke Coutee, Marvin Jones, Zeke, Conner, Witten, Garoppolo. Bench: Tyrell Williams, John Brown, Daniel Jones, Royce Freeman, Chase Edmonds.

His team: Darnold, Michael Thomas, Cooper Kupp, Tyreek Hill, Carlos Hyde, Miles Sanders, Graham, Bridgewater, Bench: Chark, Mason Rudolph, Montgomery, Hockenson, Ito Smith (Brees on IR).

Should I reject? Or counter to get Kupp in the trade? Or some other counter offer?