Arsenal legend Sol Campbell claims struggling QPR defender Rio Ferdinand is still Premier League class.
Ferdinand joined QPR on a one-year deal in July, linking up with his former West Ham boss Harry Redknapp in the process, after 12 successful years at Manchester United.
Campbell told the Mail on Sunday: "I have no doubt in my mind that Rio can still compete at the top.
"I came back to Arsenal when I was 35 and played at the highest level for six months so why can't he?
"At that time I felt I was the best defender around in the second half of that season (2009-2010) too and should have got to the World Cup, so there's no reason why Rio can't have a similar impact to that at QPR.
"Once Rio gets what QPR are and the club understand him, everything will be fine."
