DUBLIN, Jan 28 : Ireland's already depleted squad became even more stretched on Wednesday after centre Bundee Aki was dropped over a disciplinary issue and fullback Hugo Keenan broke his thumb ahead of next week's Six Nations opener in France. Keenan will return to Ireland after fracturing his thumb in training at a pre-tournament training camp in Portugal, the Irish Rugby Football Union (IRFU) said after confirming that Aki did not travel to the camp. The decision to replace the 35-year-old