I'd have to say you give Hurns the ultimatum, restructure to a team friendly deal or cut him. His production isn't there, mainly because he can't stay on the field.
Lee is a guy I see walking, but I'd hate to see him go, Lee is emerging late in this season as a solid go to guy in the midst of all these injuries
Robinson is the guy you want to keep between the 3, even coming off an acl injury he has proven to be the best of these 3 guys and if you only can keep one you keep him.

Dede/Arob in 2 wr sets sounds great. Add Cole inside the slot or moving them around to get the matchups you want. This WR group is deep, so as long as we pick the right guy(s) to bring back we should be good.

This is such a great situation to be in though, remember the days we were stuck in WR purgatory? lol

---