Corner chicken & Rory Delap 2.0 - what's the future of football?
Corner chicken & Rory Delap 2.0 - what's the future of football?
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Football tactics: Corner chicken & Rory Delap 2.0 - what's the future?
From corner chicken to Rory Delap 2.0, BBC Sport explores some ideas for where football tactics could go next.