LOL at people who pick Barkley irrespective of the form of Naismith thinking they're football purists.
........they both have clear quality but RM plays with 2 defensive midfielders who rarely cross the halfway line. In that team model, Barkley is key as he picks the ball up from deep. It's not always just about form, it's about team shape and balance. When everybody is fit RM will have a decision to make but that's why managers are paid big bucks.