Mendes said the idea of the Portuguese writing such a letter was “ridiculous”, adding in a brief statement: “It does not occur to anyone that a coach like Jose Mourinho can write letters to clubs offering their services.”
After the Premier League defeat by the Saints, during which United managed only one shot on target, Van Gaal said he and his team deserved to be jeered by their fans.
“They are right to boo. I cannot deny that, I saw the match,” said the 64-year-old Dutchman.