These are the six WR we currently have.
Christian Watson
Dontayvion Wicks
Romeo Doubs
Malik Heath
Jayden Reed
Samori Toure
I think Watson (and Reed) the only ones that are must keep. That's assuming Watson can get his hamstring issues behind him.
Doubs seems inconsistent. Maybe he's just not being used properly though?
Wicks and Heath seem to be good role players and maybe they have a high ceiling.
Toure is someone I'm completely out on.