 He has also won the Conference South title with Eastleigh in 2014 and the National League South title with Sutton United in 2016.Born in Glasgow, McAllister began his career in non-League football with Eastleigh in 2001.He signed for Isthmian League Premier Division club Basingstoke Town in March 2002 following a successful trial and scored on his debut in a 1–1 draw at home to Hampton & Richmond Borough.