BBC Sport's Pat Nevin examines why former Everton manager David Moyes may be in for an uncomfortable return to Goodison Park on Sunday.

Nevin believes that the way Toffees boss Roberto Martinez deploys his full-backs is one of the reasons behind Everton's impressive season as they chase a Premier League top-four finish.

Moyes left Everton to replace Sir Alex Ferguson at United last summer, but has seen his former side enjoy some fine results under Martinez, including a 1-0 win at Old Trafford in December.

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