I think we'll see some weeding out in the next few weeks. I wouldn't be shocked if Devante Parker got traded, to be honest. But the guys at the bottom of the list have to be telling their agents to stay sharp.
I think Tua needs to watch all the film of Parker/Fitzpatrick the past two years. Parker can outleap and outreach any CB put on him, so, even though he doesn't get a lot of separation, he will win 50/50 passes. With Tua's intelligence, accuracy, and ability to pinpoint passes to the advantage of the receiver, I can see better chemistry this year.