Agree we'll need one. Bradley has missed 41 games through injury in the last year and a half (according to transfermarkt). And he's currently injured. Don't think he's reliable enough to be first choice going into a new season. Get someone boss in and let Bradley fight for his place. If he's good enough and stays fit, he'll find a way.
Davies is a left back though. And so is Kerkez. Not sure we've been linked to any right backs or maybe I just haven't paid attention.