Probably hunting; I don't know all these guys by name but if he's linked to the Blacknet then just go to the terminals even if you haven't already consumed him. That will instead open the objective to hunt and consume him.
If this is part of a story mission then just hunt him like you would have after visiting the terminal (see previous explanation).
Hope that helps, even if just a little bit. Can't think of a better way to explain it since I don't know the specific guy. ^^'