He signed a new one-year contract with Chesterfield in May 2012. His only goal of 2012–13 came in a 6–1 win over League One team Hartlepool United in the FA Cup first round on 3 November 2012. Clay had a double hernia operation in March 2013 and after returning made one more appearance before the end of the season, as an 89th-minute substitute in a 2–0 victory away to Barnet on 6 April. He was released by Chesterfield on 29 April 2013 after making 23 appearances and scoring one goal in 2012–13.
