Get the latest United transfer window updates, news and analysis delivered straight to your inbox every day for free Rio Ferdinand has revealed that former Manchester United manager Sir Alex Ferguson never considered utilising a three-man defensive line during his spell in charge.
A number of different defensive approaches have earned focus during recent seasons, with a three-man central defensive unit regularly being utilised.
In the Premier League, Antonio Conte led Chelsea to Premier League glory in 2016-17 by utilising the approach - which features two wing-backs in a more advanced defensive role than the standard full-backs usually selected by managers.
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