This is like pulling teeth. What kind of league is this? 8team redraft? dynasty? 2QB? PPR?
Why do you have 3 QBs on your roster and what's adding Herbert as a 4th QB going to help?
You're going to trade arguably the best PPR RB in fantasy football for a QB you don't need, and way underperforming RB who doesn't catch, and an under performing WR1 with a gimpy QB?