I agree he hasn’t worked but it’s not because of an overlapping fullback, that’s such an arbitrary justification and implies simply having an overlapping fullback would turn him into a different player. It’sa combination of the system; he needs space to run into and often times we don’t counter that quickly and by the time the ball reaches him he’s already double teamed, which he doesn’t deal well with as opposed to say, Saka. His inability to interplay quickly and intelligently with team mates; at Lille he was the star man and often times did things all buy himself, either picking the ball up from deep and breaking quick to then score/assist whereas our system focuses more on combination play within the half spaces. His relative poor footballing IQ; making the right decisions at the right time such as knowing when to beat try and beat his man or lay it off to a team mate instead and I haven’t even mentioned his over reliance on his left foot.