Devin Toner is among nineteen players to commit to Leinster for the 2021-22 season.
The 34-year old lock made his provincial debut in 2006, and has helped Leinster win four Heineken Champions Cups and a whopping seven Guinness PRO14 titles.
However, notable by his absence from the list of Leinster contract extensions is Tadhg Furlong.
Jonathan Sexton and Cian Healy are the confirmed Leinster players on IRFU central contracts for next season, but Furlong is yet to agree a new deal.
Sean Cronin, Dan Leavy, Luke McGrath, Rónan Kelleher and Jimmy O'Brien are among the deals confirmed by the province earlier in the week.
Head coach Leo Cullen said of the contract signees, "This has been a challenging few months on the contracting front so I think it’s important to acknowledge the role of the IRFU and our own Mick Dawson and Guy Easterby and their work in managing a very difficult period.
“We look forward to welcoming Michael [Alaalatoa] and Nick [McCarthy] to the club in the coming months and to have retained 17 players, 16 of whom came through our Academy system, is a huge boost for everyone as we look forward to next season and hopefully supporters being back at the RDS Arena."
Leinster Rugby Contracts:
1. Michael Alaalatoa – joining from Crusaders
2. Thomas Clarkson – promoted from the Academy
3. Jack Conan
4. Seán Cronin
5. David Hawkshaw – promoted from the Academy
6. Dave Kearney
7. Hugo Keenan
8. Rónan Kelleher
9. Dan Leavy
10. Nick McCarthy – joining from Munster Rugby
11. Luke McGrath
12. Michael Milne – promoted from the Academy
13. Ross Molony
14. Jimmy O’Brien
15. Scott Penny
16. Devin Toner
17. James Tracy
1. Cian Healy
2. Johnny Sexton