Mezue ahịrịokwu na-esonụ: Cooney mere ya agadi mpụta mbụ maka Leinster na 2 September 2011, mgbe ọ malitere megide Ospreys na Swansea n'oge mmeghe egwuregwu nke
2011<unk>12 Pro12. Cooney gara n'ihu na-apụta maka Leinster na egwuregwu ahụ, na-egwuri egwu ugboro anọ ọzọ, ọ bụ ezie na nke ọ bụla n'ime ihe ndị a sitere na bench. Ọtụtụ n'ime ihe ndị Cooney mere bụ mgbe ndị egwuregwu Leinster na-anọghị n'asọmpi Iko Mbaụwa nke afọ 2011, n'agbanyeghi na o tinyekwara goolu mbụ ya maka ndị otu ahụ n'ọgụ ha meriri Benetton Treviso. Cooney mere egwuregwu mbụ ya na Europe maka akụkụ ahụ na njedebe nke 2011-12 Heineken Cup, na-abata dị ka onye na-agbanwe agbanwe na Leinster 42-14 meriri ndị iro Irish Ulster ma merie nrite na usoro ahụ.