BBC Sport - Romelu Lukaku could be best number nine in the world - Roberto Martinez

Lukaku could be world's best number nine - Martinez

Former Everton manager and current Belgium boss Roberto Martinez believes striker Romelu Lukaku has the potential to become "the best number nine in world football".

Watch more from Roberto Martinez on Football Focus, Saturday 25 March, 12:00 GMT on BBC One and the BBC Sport website & app.

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