There was a guy in the old Hitmanforum that sounded exactly like Bateson. He had a youtube channel and when he spoke he sounded just like him. Maybe this is the impersonator you’re talking about?
I don’t recall what his name was, but I’d say IO should search him and consider him on the role in case David can’t come back. Otherwise they should hire back the guy who voiced 47 in the demo version of C47 He’s the closest thing we have to another “official” voice for 47.