Play through the middle: move the ball round the outside to shift the defenders, find the pivot the moment he gets free, and have him play forward to the far side, first time or on the half turn.
Mark a 14 x 14 m square. Put one player on each side and a pivot in a different bib in the middle, with two defenders inside. The outside players have a maximum of two touches. A point is scored by a pass between the two defenders into the pivot, who then plays the ball to the player on the opposite side. When the lane into the pivot is shut, the ball goes round the outside until it opens. Keep two supporting players level with the defenders either side of the ball, so a pass round is always on. If the defenders win the ball, or a player breaks a condition, he goes in as a defender. Rotate the pivot every round.
A rondo with only perimeter players teaches the ball to go round. Put a pivot in the middle and the question changes to whether it can go through. That is the point of the 4v2+1: four players on the lines, one in the middle, two defenders, and a point for a pass between the defenders into the pivot that he then plays on to the opposite side.
The pivot is the player the drill is really for. Standing still in the middle is the commonest mistake, because the defender marking him only has to stay between him and the ball. The fix is timing. As the ball travels to an outside player, the pivot checks away from his marker into the space on the other side, so by the time the outside player can pass, the lane to him is open and the marker is a step behind.
How he receives matters as much as where. Square on to the passer, the only easy pass is back where the ball came from. Half turned, on the back foot, he can see the far side and play forward, first time if it is on. That body shape is what separates a midfielder who keeps the ball from one who moves it forward.
The outside players have their own job. When the lane is shut they move the ball round the outside to drag the defenders, keeping two supporters level with the defenders either side of the ball so a pass round is always available. Then they look inside again.
For the defenders the picture is simple and demanding: one presses the ball, the other stays goal side of the pivot. If the ball goes into the pivot anyway, it is usually because the marker watched the ball instead of the player.
Save it to your private drills, then change the animation, adjust positions, swap equipment, or drop it into a session block. Or start from a blank pitch and build your own.