Super agent Jorge Mendes has compared Jose Mourinho to football 'god' Sir Alex Ferguson, and insists the Scot is impossible to replace at Manchester United.
Read: Scholes: Fergie Would Stop Mourinho's Referee Mind Games
Ferguson resigned in 2013 following 38 trophies in a 27-year reign, and was replaced by David Moyes - who just lasted 10 months in the job.
Ferguson's successor was replaced by Louis van Gaal, but Mendes insists the Red Devils would have more points now if Ferguson was still in charge.
"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 told BBC.
"You have one in England - Jose Mourinho.
"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."
Mendes, who is the agent of the likes of Mourinho, Cristiano Ronaldo and Angel Di Maria, also insisted the Chelsea boss will be similarly successful.
"Jose will stay for sure," he added.
"He will be the Sir Alex Ferguson of Chelsea Football Club. He loves the supporters, he loves the city and I think he will stay there for more than 10 years."
Mourinho has won six trophies at Stamford Bridge during his first spell at the club, but last season was his first without any silverware for the Blues.
Read: Valdano: Mourinho A Poor Man's Guardiola
Do you think Jose Mourinho can become as successful as Sir Alex Ferguson? Have your say in the comments section below.