Rio Ferdinand and Manchester City striker Sergio Aguero touched down in Singapore this week to take on numerous head-to-head challenges.
The defender's Manchester United career is over following 12 years at the club, but he kept up the local rivalry with Aguero during a promotional trip to Asia.
The pair have been asked by telecommunications company SingTel to participate in a number of challenges, all of which need to be captured with selfies on Twitter.
The player who gains the most re-tweets on the social networking website will win the challenge.
