He wants to argue that he still doesn't know who Judas is or what they're for, or if Cassius is even satisfied with the outcome of their raid on the UNA facility, but he's still foggy. Probably the only reason why they're even having this conversation--Gabriel isn't in his right mind and can't make sound decisions. All the better for Johann to get what he wants.

"I'll also have UNA programming in my head." Which, if Johann hasn't guessed, is something Gabriel is extremely opposed to. "What do you get out of it?"

There has to be a reason why this is happening. Why Johann is offering this to him.