[2] He was released by Crystal Palace at the end of the 2004–05 without playing for the first-team and joined Oldham Athletic on a non-contract basis in November 2005 to provide cover for an FA Cup tie against Chasetown,[3] in which he made a substitute appearance.

[1] He then joined Shrewsbury Town on non-contract terms in February 2006 to provide cover for regular goalkeeper Joe Hart.

[1] Cronin left Shrewsbury in April 2006,[4] and after a trial with Grimsby Town,[5] joined Gravesend and Northfleet (now Ebbsfleet United) to cover a long-term injury to regular goalkeeper Craig Holloway.

[11] He made his Rovers debut in the New Year's Eve match against Crewe Alexandra replacing Scott Bevan at half-time who had conceded four goals in the first half.

[16] Cronin was appointed Assistant Manager at Whitehawk under Pablo Asensio after King was sacked in January 2016.