The curtain came down on the playing career of the multiple European Cup winner last weekend and coaching might be a route which O'Brien selects for the next stage of his life.
Leinster senior coach Stuart Lancaster said he is optimistic of the chances of Tadhg Furlong and James Lowe featuring in the upcoming Heineken Champions Cup final against La Rochelle to be played at Stade Velodrome on Saturday.
Aviva Stadium will be hosting the finals of the 2023 edition of the Heineken Champions Cup and Challenge Cup as confirmed by the European Professional Club Rugby.