A period of considerable speculation as to Ó Sé's future intentions ended in February 2010 when he announced his retirement from inter-county football in an interview in Irish with former teammate Dara Ó Cinnéide on the "An Saol ó Dheas" programme on RTÉ Raidió na Gaeltachta. He said that he had been considering the matter since Christmas but only came to a final decision at the beginning of February. Ó Sé added that he would continue to play with his club An Ghaeltacht and his divisional side Ciarraí Thiar.