Campbell joined Leicester in a £1.6m move from Birmingham City in July 2007 but last season after an injury interupted season when he only scored four goals for The Foxes who were relegated, instead of helping Leicester back in to the Championship, he was loaned out to Blackpool and scored against City.
He was rejected as a youngster by Aston Villa and played non-league football with Chesham United, Stevenage and Yeading before moving to Brentford and Birmingham in 2006.