[2] Later in the year he joined Collingwood as a Category B rookie after finishing 12th in kicking at the AFL Draft Combine,[3] signing a two-year contract.
[4] In the 2019 AFL season, he suffered a concussion, a quad injury, and a torn hip rotator, which limited his playing time.
[8] He made his debut at Marvel Stadium against Port Adelaide in the club's round 19 match of the 2021 AFL season,[9] which Collingwood lost by 28 points.
[10] In August 2021, Tohill retired from Australian rules football after turning down a one-year contract extension and returned to Northern Ireland to study medicine at Queen's University Belfast.
[15] Tohill's athleticism was credited with helping his club Swatragh defeat Bellaghy in the last 16 of the 2022 Derry Senior Football Championship in September that year.