I have a big, big problem with long through-balls from deep.
I have tried with a variety of different formations, shapes, instructions etc, but nothing seems to help.
I don't play with a high defensive line. In fact, it can be as deep as i can possibly get it. With or without anyone in the DM position. Quick and slow defenders.
But the same thing happens. My defenders (CDs in particular) cannot deal with those kind of balls.
Now, the obvious solution is to stop those balls from coming i