Paris - New Zealand lock Ali Williams will start Saturday's French Top 14 final in place of South African Danie Rossouw, the French Rugby League (LNR) revealed on Friday.
Williams replacing Roussow, who like Toulon captain Jonny Wilkinson will retire after the match, to play alongside South Africa legend Bakkies Botha in the second row was the only change from the Toulon line-up that started against Saracens in the Heineken Cup final in Cardiff last weekend.
Meanwhile, champions Castres have named the same side that started their semi-final victory over Montpellier two weeks ago.
Kick-off is at 21:00 SA time
Teams:
Toulon
15 Delon Armitage, 14 Drew Mitchell, 13 Mathieu Bastareaud, 12 Matt Giteau, 11 Bryan Habana, 10 Jonny Wilkinson (captain), 9 Sebastien Tillous-Borde, 8 Steffon Armitage, 7 Juan Martin Fernandez Lobbe, 6 Juan Smith, 5 Ali Williams, 4 Bakkies Botha, 3 Carl Hayman, 2 Craig Burden, 2 Xavier Chiocci
Substitutes: 16 Jean-Charles Orioli, 17 Alexandre Menini, 18 Jocelino Suta, 19 Danie Rossouw, 20 Virgile Bruni, 21 Maxime Mermoz, 22 Michael Claassens, 23 Martin Castrogiovanni
Castres
15 Brice Dulin, 14 Max Evans, 13 Romain Cabannes, 12 Remi Lamerat, 11 Remy Grosso, 10 Remi Tales (captain), 9 Rory Kockott, 8 Yannick Caballero, 7 Anthonie Claassen, 6 Piula Fa'asalele, 5 Rodrigo Capo Ortega, 4 Richie Gray, 3 Ramiro Herrera, 2 Brice Mach, 1 Yannick Forestier
Substitutes: 16 Mathieu Bonello, 17 Saimone Taumoepeau, 18 Christophe Samson, 19 Jannie Bornman, 20 Cedric Garcia, 21 Seremaia Bai, 22 Daniel Kirkpatrick, 23 Mihai Lazar