Career
Cornick began his career with non-league Christchurch and joined Bournemouth in September 2013 after a successful trial. Cornick went on loan to Conference Premier side Welling United in January 2014. He ended the season with a short loan spell at Aldershot Town.
In February 2015 Cornick went on loan to Havant & Waterlooville.
On 7 August 2015, Cornick joined League Two side Yeovil Town on a one-month loan deal. He made his debut the following day in a 3–2 defeat against Exeter City, scoring with his first touch after coming on as a half-time substitute.