He may have been a loyal servant to England but Rio Ferdinand believes that Roy Hodgson's men have their work cut out for them at this year's World Cup.

"If they get that far, they'll have done unbelievably well with the squad that they have," the 35-year-old centre-back said of the youthful Three Lions' chances of reaching the semi-finals in Brazil.

"They have very young players - inexperienced - but it's a very exciting team."

Just days after announcing that his 12-year stay at Manchester United was over, Ferdinand is in Singapore together with Manchester City striker Sergio Aguero for the SG Game On! Ultimate Selfie challenge.

A campaign jointly-organised by SingTel and Samsung, the two-day event will pit the two players against each other in a series of challenges.

On Thursday, Ferdinand and Aguero took selfies of themselves while completing tasks such as learning Singlish, practising tai chi, eating hawker food and showing off their football skills at the Singapore Flyer.

The United man emerged victorious by virtue of more retweets of his selfies. It prompted Ferdinand - at the end of a poor season with the Red Devils - to quip: "At least we won something this year!"