"I have also been fortunate enough to work alongside the world’s best players and managers. That has been a great honour.
"I wish Coventry City every success for the future and am sorry that I have not been able to contribute greatly over the last couple of years. For that, I can only apologise.
"I would like to thank my family, girlfriend and all my friends who have been so supportive, sharing my highs and enduring my lows.
"And finally, I retire content that I have had the opportunity to play football for the greatest nation in the world."