Van Gaal suggested on Thursday De Gea had lowered his standards .
On Friday , De Gea was ' irritated ' that his professionalism has been called into question by Van Gaal and he believes he has trained perfectly well over the past fortnight .
Van Gaal suggested on Thursday De Gea had lowered De Gea 's standards .
On Friday , De Gea was ' irritated ' that his professionalism has been called into question by Van Gaal and he believes he has trained perfectly well over the past fortnight .