England under-21 boss Lee Carsley emerged as Gareth Southgate side's secret weapon in the resounding last 16 win over Senegal.
The senior England side booked an exciting quarter-final tie against France with a comprehensive 3-0 win over the African champions at the Al Bayt Stadium on Sunday night.
And Sportsmail can reveal that former Everton midfielder Carsley played a key role in preparing England for their crucial victory over the Senegalese.
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