 Following his move to Preston, Treacy defended his move to Blackburn's arch-rivals, Preston North End, was only for to play football.Treacy made his Preston North End debut on 2 February 2010, in a 4–1 loss against Barnsley.He scored his first goal for the Lancashire outfit in a 3–1 defeat Crystal Palace on 5 April 2010, followed up by scoring and provided an assist, in a 3–2 win over Scunthorpe United five days later.