Bengals fan here.
The Bengals promoted Auden Tate from the practice squad today and that is significant. He is obviously no AJ Green, but I will say if there is a WR in the organization that can give you the "look" of AJ Green, then I think he is the guy. He is raw, and will likely make some mistakes, but if they put him in there to mimic what they would try to do with AJ, then I think it will keep Boyd freed up to work the middle. Tate made some highlight catches in training camp and preseason and Bengals fans are hoping he can move that into the real life football. This is his chance to work onto the game day actives. (if he is inactive, I would be surprised.)
Also add in the fact that GIo and Ross were back at practice, and I think you will see Ross try to stretch the field as that was not really AJ's main function. They got Ross to stretch the field to open things up for AJ. If he is healthy, then the defense will still need to pay attention to him. Gio gives them an added target in the passing game that they haven't had in over a month, so I don't think teams will be able to key on Boyd. It'd be better if Eifert was there, but Uzomah was banged up a little bit before the bye week and seems to be closer to full health with the week off. There are enough capable weapons there that I think they will be ok.
Sunday 1PM game at home against a team that gives up fantasy points to the WR position. Year, I think Boyd will be fine this week. We will see going forward.