Full-back comes inside. Winger comes short. Nobody runs behind.

The issue is not that the full-back comes inside or the winger comes short. It is that both movements remove depth at the same time. Somebody has to keep the back line concerned about the space behind. That could be the 9 running a channel, the far winger threatening the last line, or the 8 moving beyond once the winger comes towards the ball. I’d coach the front five with one simple reference: when two players come towards the ball, who is moving away from it? Use a directional game where goals only count after somebody has received or run beyond the final defensive line. That exposes possession that looks tidy but never changes the opponent’s depth. Rotations should create a new problem. If every rotation brings players closer to the ball, the opposition can squeeze and defend a smaller area. Good movement needs connection and separation at the same time.