Use an 8v4 superiority to play through the middle rather than around it: find the pivots between the lines, combine pivot to pivot and with the third man, and progress from one end neutral to the other. When the ball changes hands, the team that won it escapes through a neutral and the team that lost it counter-presses at once.
Mark an 18 x 25 yd grid with a disc on each corner and at halfway (FIFA's version uses 20 x 20 m). Three teams of four in three bib colours. Two teams play 4v4 inside. The third team are neutrals who always play for the team with the ball: one on each end line and two pivots inside, one in each half. Score a goal by moving the ball from one end neutral to the other. The ball has to go through the middle: a pass from an end neutral to a wide player and straight on to the other end neutral does not count, it must go through a pivot or a player inside. A pass into a pivot that splits two defenders on the way counts double. When the defending four win it they attack at once, towards either end neutral, and the team that lost it has five seconds to win it back. Start with free touches, then limit the neutrals to one or two touches. Play rounds of three to four minutes and rotate the three teams one for one, so everyone plays every role.
The 4v4+4 is the natural next step from Guardiola's 4v4+3. Two teams of four play inside an 18 by 25 yard grid, and a third team of four are neutrals who always play for whoever has the ball: one on each end line and two pivots inside, one in each half. The team in possession is eight against four, so keeping the ball is not the problem. The problem is going forward through the middle.
That is what the rule is for. A goal is moving the ball from one end neutral to the other, but a pass from an end neutral to a wide player and straight on to the other end neutral does not count. The ball has to go through the centre, through a pivot or a player inside, so the team on the ball has to find the pockets between the four defenders rather than going round them.
The second pivot changes the problem. With one pivot, the defenders can screen him and force everything wide. With two, screening one opens the other, and the most dangerous pass in the game is pivot to pivot: the first pivot draws the press, plays the second first time, and the second lays it off to a third man running forward. That player receives facing the far end with the defenders turned, and one more pass reaches the end neutral.
The entry into the first pivot is often a pass that splits two defenders, and scoring it double rewards the courage to play it. Shape makes it possible: if the four in possession hold the width and depth of the grid, the defenders have to spread out and the gaps between them open.
The game also punishes forcing it. A pass into a screened pivot gets cut out, and then the transition is immediate: the team that won it attacks at once and the nearest neutral is theirs, so the best escape from the counter-press is usually a first-time pass into a neutral. The team that lost it has five seconds to win it back before they drop into shape. With three even teams, the coach rotates them one for one every few minutes, so everyone plays inside, as a pivot and on the end line.
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.