De Gea struggled when he first came to England, with former United defender Ferdinand saying he and his team mates were asked by then-manager Sir Alex Ferguson whether the Spaniard or back-up Tomasz Kuszczak was better.
However, De Gea has spectacularly proved the doubters wrong since, including Ferdinand, who regards him as being the best keeper playing today.
Manchester United’s players had severe doubts over David De Gea, revealed Rio Ferdinand
Speaking on BT Sport, Ferdinand said: ‘He is the best in the world, it’s a fact. He made elementary mistakes at first and we thought, what has Eric Steele seen?
‘He worked in the gym. Scholesy, remember when the gaffer called us in and asked who he should play against Liverpool?
‘It was either David or Tomasz Kuszczak, I said David and so did a…