Both United boss Sir Alex Ferguson and England manager Capello were present at the Landmark London to watch Rooney collect his Football Writers' Association's Footballer of the Year trophy, adding to the 2009/2010 PFA Player of the Year accolade.
Capello is in no doubt Rooney has the world at his feet.
"In addition to his great technical ability, Wayne is also a player who never gives up and has a great desire to win every game," the England manager wrote in a personal tribute to Rooney for the FWA.
"I like working with him, because he wants to learn all the time and works to improve in training.
"He is also very popular with his team-mates because of his attitude on and off the pitch."
Capello continued: "Wayne is a very special footballer and he is now one of the top players in the world.
"He is still a young player and he can go on to achieve a lot more in the game, for many years.
"Hopefully it will be good for England that Wayne has been in such great form this season, as he will be a very important player for us in South Africa."