AUSTRALIAN international Cooper Vuna is set for his Worcester Warriors debut tomorrow when Dean Ryan's men take on London Scottish at Sixways (3pm).

Vuna is one of four changes to the starting line-up that slipped to a narrow Greene King IPA Championship defeat in Jersey last weekend.

Vuna joins a backline that includes Chris Pennell, Sam Smith, Max Stelling, Andy Symons and Jonny Arr, while Ryan Lamb returns at fly-half.

The pack remains unchanged apart from Argentina international Leonardo Senatore who replaces Sam Lewis in the back-row.

Ryan Mills is named among the replacements as Warriors chase a 17th league win this season.

Warriors: Pennell; Smith, Stelling, Symons, Vuna; Lamb, Arr; Bower, Annett, Schonert, Williams, Thomas, Senatore, Betty, van Velze. Replacements: Creevy, Rapava Ruskin, Rees, O'Shea, Mulchrone, Mills, Howard.