[2] During his time there, Clarke contested two Sigerson Cup campaign - including 2016 - when UU were hosts.
Whilst at UU, at the age of 19 he made his inter-county debut for Cavan against Donegal in the Ulster Senior Football Championship.
[7] In 2019, Clarke received a red card during Cavan's National Football League match against Tyrone at Healy Park.
Ulster defeated Munster in the Semi-Final and overcame Connacht in Pairc Sean MacDiarmada in December 2016, to win his first Railway Cup.
[1] On 25 October 2017, Clarke was named in the Ireland squad for the 2017 International Rules Series against Australia in November.