England defender Rio Ferdinand has announced his retirement from international football.The Manchester United player, 34, who won 81 caps, said he wanted to concentrate on his club career."After a great deal of thought, I have decided the time is right to retire from international football," he said.England manager Roy Hodgson said: "To have captained his country, and to play at three World Cups, marks him out among a very special group of players."Ferdinand has not played for England since a Euro 2012 qualifier against Switzerland in June 2011.He added: "I feel it is right for me to stand aside and let the younger players come through, which allows me to concentrate on my club career."The team looks in great shape and there is an influx of young, talented players coming through the ranks which bodes well for the future."I regard it as a great honour and a privilege to have represented my country at every level from Under-17s upwards."I have always been very proud to play for England. I would like to wish Roy and the team all the best for future tournaments."