Rio Ferdinand has been forced to withdraw from England's upcoming World Cup qualifiers against San Marino and Montenegro, the English FA said on Monday. In a statement on its website, the FA said the decision was taken following a meeting with England manager Roy Hodgson. Hodgson was quoted as saying: "I'm disappointed Rio will not be available, but due to the detailed pre-planned training and medical programme he must follow it's not possible." Steven Caulker of Tottenham Hotspur was called up from the Under-21 squad to replace Ferdinand. (For more sports news and updates, follow Ahram Online Sports on Twitter at @AO Sportsand on Facebook at AhramOnlineSports)