Lester, 31 officially signed for the Derbyshire club on 4th July after being handed a free transfer by Nottingham Forest after two and a half years with the club.
United signed the Sheffield born striker from Nottingham Forest in July 2003 before returning to the City Ground in November 2004. He played a total of 31 (+19) games and scored 15 goals for the Bramall Lane club.
He had previous enjoyed spells at Grimsby Town, Doncaster Rovers (loan) and Nottingham Forest prior to joining Sheffield United. Lester joins strikers Wayne Allison and Paul Shaw as former representatives at Sheffield United to now be at Chesterfield.