Former England Under 18 Schoolboy international Sean was signed in March 2008 from Harefield United, at which time the 21-year-old was amongst the Spartan South Midlands League's leading goalscorers for the season, with 31 in league and cups - and he netted against the Woods in the Middlesex Charity Cup tie in November 2007, as well as twice in a friendly the previous July.

Before joining Harefield he was at Sun Postal Sports, at which time he had trials at Crystal Palace.