Turn a warm-up square into a combination rep: quality wall passes off a fixed corner and a driven diagonal switch played first time off the return.
Mark a 20x20m square, one player and one cone per corner. The player in possession passes into a corner next to him, that player sets it back first time without turning, and the return is hit long across the diagonal to the corner opposite. The receiver of the diagonal repeats the sequence off one of his own neighbours. Change which neighbour is used as the wall every beat so both feet get worked. Two touches maximum, and the diagonal should be driven, not floated.
The plain passing square is a warm-up and should stay one. Every pass goes along an edge, every receiver knows where the ball is coming from, and after two minutes the exercise stops asking anything. This variation keeps the same grid and the same four players and turns it into a combination rep by changing only what the ball does.
Two actions are being trained. The first is the wall pass: a short ball into a neighbour who sets it straight back without turning. It looks trivial and it breaks down constantly, almost always because the wall wants a touch. A touch is not a small error here, because the whole value of the set is that it returns the ball while the picture is still the one the passer saw.
The second is the switch off the return. Hitting a long diagonal immediately after receiving a short set is genuinely difficult: the body is set for a short pass and the next action needs a full strike across the grid. That is exactly the sequence that shows up when a midfielder bounces the ball off a striker and then switches to the far winger, and it is worth training away from the pressure that hides it.
Alternating the wall from one neighbour to the other every beat is not decoration. Using the same neighbour every time means the playmaker always receives on the same side and always strikes with the same foot, and a passing pattern that only trains one foot is a passing pattern that will be pressed off the pitch by anyone who notices.
The diagonal should be driven along the floor. A floated ball is easier to hit and it removes the difficulty from the receiver, who then has time to control it and set his feet, which is the opposite of what the rep is for.
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.