sentences:  McCarthy joined Oxford United on loan in March 2003, joining the club on a permanent basis at the end of the season.After 35 appearances for Oxford, he was released on a free transfer in summer 2004 and joined non-League club Hornchurch.He became available after Hornchurch ran into financial trouble and signed for Conference National club Gravesend & Northfleet (now Ebbsfleet United) in November 2004.