Leinster prop Michael Ala'alatoa has agreed a new contract to remain at the province.The tighthead extends his deal at the RDS by at least one year, having joined in the summer of 2021 from Super Rugby's Crusaders.The 31-year-old has been heavily involved in his two seasons in Dublin, playing 41 times and scoring five tries across the BKT United Rugby Championship and Heineken Champions Cup.An older brother of Australia international Allan, Ala'alatoa has won 13 caps for Samoa, and has captained them since 2021.It's been a busy week of contract renewals at Leinster this week, with Scott Penny and Joe McCarthy both extending their deals in recent days.One player departing Leinster is academy flanker Sean O'Brien, with the former Ireland U20 international joining Connacht next season.Born in Pittsburgh but Irish-qualified, O'Brien has made three professional appearances for Leinster and also had a stint with the LA Giltinis in the MLR, helping them to win the title in 2021, while he also played for Ireland U20 in 2020 alongside future Connacht teammates Cian Prendergast, Cathal Forde, Diarmuid Kilgallen, Oran McNulty and Andrew Smith. Listen to the RTÉ Rugby podcast on Apple Podcasts, Soundcloud, Spotify or wherever you get your podcasts. Watch Scotland v Italy in the Six Nations on Saturday from 12.30pm on RTÉ2 and RTÉ Player Follow a live blog on Ireland v England on Saturday from 4pm on RTÉ.ie/sport and RTÉ News app and listen to live commentary on Saturday Sport on RTÉ Radio 1