He explained: "My instinct would be for John Terry because he is the type of naturally courageous player who leads his team-mates by example.
"But Rio Ferdinand, so much more mature than five years ago, would be a clever choice for another reason.
"But Ferdinand might find an extra 10% in his game by being captain."
Robson, speaking in The Mail on Sunday, explained: "I've noticed with Ferdinand the bigger the stage, the better he plays.
"He was outstanding in two World Cups but lost concentration in lesser games.
"By giving Ferdinand the responsibility of leading his country out, you almost guarantee world-class performances from him."