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Be afraid, be very afraid: Rio Ferdinand warns rivals that Manchester United are not yet firing on all cylinders - Mancunian Matters
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Counting down the Premier League's best ever players by shirt number (10-1): Rooney, Shearer... | PlanetSport
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Manchester United fans love what Rio Ferdinand did to Sergio Aguero's shirt - Manchester Evening News
![Squawka on Twitter: "Rio Ferdinand has announced his retirement from professional football at the age of 36. http://t.co/QwnT1u4VYW" / Twitter Squawka on Twitter: "Rio Ferdinand has announced his retirement from professional football at the age of 36. http://t.co/QwnT1u4VYW" / Twitter](https://pbs.twimg.com/media/CGQNZtlXEAAqlrm.jpg)