St George Illawarra coach Paul McGregor has named a 21-man squad for the Round 25 clash against the Penrith Panthers at Pepper Stadium on Sunday, August 27.

Nene Macdonald (knee) has been named to return and replaces Scottish international Euan Aitken (shoulder) who is out for the season and consequently the 2017 Rugby League World Cup.

Leeson Ah Mau and Tariq Sims swap between the bench and the front row, while Hame Sele (illness) occupies Will Matthews's place on the interchange.

Kalifa Faifai Loa has been named in the reserves in place of Jacob Host.

Tyson Frizell will also celebrate his 100th NRL game as a Dragon against Penrith.

NRL Squad for Round 25 v Penrith Panthers:

1. Matt Dufty
2. Nene Macdonald
3. Josh Dugan
4. Tim Lafai
5. Jason Nightingale
6. Gareth Widdop (c)
7. Kurt Mann
8. Leeson Ah Mau
9. Cameron McInnes
10. Paul Vaughan
11. Tyson Frizell
12. Joel Thompson
13. Jack de Belin
Interchange:
14. Tariq Sims
15. Hame Sele
16. Blake Lawrie
17. Josh McCrone
18. Taane Milne
19. Kalifa Faifai Loa
20. Luciano Leilua
21. Will Matthews

Players unavailable:

Kiti Glymin (shoulder) – indefinite

Levi Dodd (knee) – season

Russell Packer (knee) – Round 26

Euan Aitken (shoulder) – season