Walker already does and Rose never will.
Specifically though, they will never be effective in an attacking sense while we persist with an orthodox winger.
Walker can never overlap Lennon, because Lennon is already hugging the touchline. There's more potential for it to work on the left with Siggy/Chadli/Eriksen there, but Rose just isn't really capable enough.
I don't think Jesus Navas cut in-side often but hugs on the line however his partnership with Zabaleta looks mile better than Lennon + Walker.
At the end it still base on the understanding , the cohesion and most importantly what they do in training. Which sadly i can't see any of these in our team.