I've been playing around with the tactic in a Hull City save and I've tried a Half Back (HB) instead of the Ball Winning Midfielder and I'm seeming to concede less and the player (Batty) is getting consistently good ratings. Try the switch if you want, but I'll keep it as a BWM for now, because I know half backs are harder to come by.
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You can see the difference between form when transitioning from the BWM to...