Ryan will hand Premiership debuts to three players full-back Rob Thirlby, centre Mike Tindall and scrum-half Peter Richards.
But Boer told www.gloucesterrugby.co.uk. We know its going to be a huge contest. Its only after the first Premiership game that you know where you really stand.
First and foremost we are in a local derby and that always means a big confrontation, particularly in the forwards.
We know what to expect and we also have a lot of respect for
Boer will line-up in a back row alongside skipper Adam Balding and breakaway Andy Hazell, while Adam Eustace and Alex Brown form the second row partnership.
Richards and Ludovic Mercier the prolific French points scorer are the half-back combination, while Tindall partners Henry Paul in the centre. James Simpson-Daniel, the brilliant
Summer signing and England Sevens international Rob Thirlby will start his first competitive match at full-back.
GLOUCESTER v (Worcester, Sunday, Sixways, 3pm): Rob Thirlby; Mark Foster, Mike Tindall, Henry Paul, James Simpson-Daniel; Ludovic Mercier, Peter Richards; Patrice Collazo, Olivier Azam, Phil Vickery, Adam Eustace, Alex Brown, Jake Boer, Andy Hazell, Adam Balding (capt). Reps: Mefin Davies, Gary Powell, Mark Cornwell, Peter Buxton, Haydn Thomas, Duncan McRae, Jon Goodridge.


