Ferguson has been in charge of Manchester United for 24 years.
The England boss said: “In the history of football, the best manager is Sir Alex.
“For such a long time he managed the team and he has changed a lot of things.
“He changed the team, he changed the players, he has been really, really good for the club.”
“I wish him another 20 years of management at the top level,” said Capello.
