Downing has been selected in both of Capello's first two squads and admires the way the Italian conducts himself around the players.
The winger said: "Mr Capello is obviously a very intelligent man and an excellent manager. He speaks to the team as a whole rather than to certain individuals.
"What he has to say is very interesting. He's very good at what he does and there’s a ruthless streak which is the edge you need to have at international level," said Downing.
"I think he could be just the sort of man we’ve been looking for, and that can only be good for England in the long term."