Doherty is reinventing himself as a more conservative RB and fans are not realizing it yet. It´s not just getting used to play in a back four, it´s to get back to defensive position quickly and then defend narrow, next to the RCB. Since the match against LASK, his positional game has been great.
Remember, Doherty was signed to be our most attacking FB - offensive RB in asymmetrical FB´s system - and we all still have images of him inside the opposition box scoring goals. It all changed when we signed Reguilón, though. Doherty is adapting. He adds quality when he does go forward and that ball to Harry Kane was delicious. With time, he will do it more and more.
Oh, and he is our best player in the air. We are still not great defending set pieces and crosses, but we definitely improved since West Ham (Doherty was not playing then).