These are professional footballs, my grandmother would know that if there is 30 seconds left and you are trying to save a game you would help out the defence, why does the coach need to say anything. Shouldnt the team just instinctively know when they should react a particular way. Maybe this is the core of the problem, we have brainless players who cant think for themselves, the coach can only do so much, in the end the players must learn to take control of various situations by themselves.