Rio Ferdinand insists England have "still got a lot to prove" despite their flying start under Fabio Capello which has put them on course for the 2010 World Cup finals.
England will move another step to achieving that goal if they chalk up their fifth successive victory in their qualifying group by defeating Ukraine at Wembley on Wednesday night, but Ferdinand, who has shaken off the back injury which ruled him out of the weekend friendly with Slovakia, is aware England are far from the finished article.
The Manchester United star defender said: "We are a work in progress. We've won four games in our qualifying group. Loads of teams around the world win four games on the bounce. It doesn't make us a great team. We know that we've still got a lot to prove."
He added: "We're not in a position where the manager can say 'Well done, you've achieved this and that'. We've not achieved anything."
Ferdinand admits the England camp is a happier place to be when results are favourable and how the "aura" surrounding Capello means the players are keen to make an impression.
He said: "It's always a pleasure playing for England - and in front of the fans at Wembley. That never changes. There's always a passion and a desire to do well for your country.
"The realisation that you're one of the best players in the country is always there but it's a results-driven game. When you're winning it's a much happier place to be.
"Fabio Capello has got an aura about him. He's the type of guy you want to impress all the time when you're in training or you're out on the pitch. That's breeding good habits and that hopefully will bring good results in the future."
Ferdinand revealed Capello is not afraid to put his point across, adding: "Fabio is out on the training pitch and very vocal. He is very direct and straight in saying 'This is what I want, this is how it is going to be'.
"He's like that on a one-to-one basis as well. He does more in a group situation but if he sees something out on the pitch, he's not shy about grabbing you and telling you what he wants."
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