The agent of Manchester United striker Radamel Falcao has taken a fresh swipe at Louis van Gaal. Mendes says Van Gaal is failing to live up to the standards of Sir Alex Ferguson.
"Having Sir Alex Ferguson ensures at this moment you have 12 or 15 points more.
"He's finished his career, but he's someone that's the difference."
Speaking with BBC Sport, Mendes says executive chairman Ed Woodward was "the right guy to drive Manchester United to find a way to win important trophies".
"But at the same time, he has just one problem - it's completely impossible to find someone like Sir Alex Ferguson because he's a god, he's a genius and to find a genius is very difficult," Mendes said.
"You have one in England - Jose Mourinho."
