A watan Afrilu na 2011 an sanar da cewa O'Donohoe ya sanya hannu a wata lardin Irish, ya yarda ya shiga Connacht don kakar 2011-12, a cikin tsari da ke haɗuwa da tsohon kocinsa na Ireland Under-20 Eric Elwood, wanda yanzu ke kula da lardin yamma. Wannan shi ne kakar wasan farko ta Connacht a gasar cin kofin Heineken, kuma a tsawon kakar wasan O'Donohoe ya yi gogayya da sauran 'yan wasan Connacht, Frank Murphy, don fara farawa. O'Donohoe ya fara bugawa Connacht kwallo a cikin
2011<unk>12 Pro12 a ranar 10 ga Satumba 2011, yana fitowa daga benci a kan Scarlets, ƙungiyar da ya buga da ita a farkon Leinster. O'Donohoe ya buga wasansa na farko a Turai don Connacht a cikin Heineken Cup na 2011-12, yana farawa da ƙungiyar Ingilishi Harlequins. A kakar wasa ta farko ta O'Donohoe ya buga wasanni 16 a gasar Pro12, biyar daga cikin wadannan sun fara farawa, kuma ya fara farawa a cikin wasanni hudu na wasanni shida na Heineken Cup na Connacht, yana fitowa daga benci a cikin sauran biyu.