Blues centre Jackson Willison has been all but ruled out of Friday's match against the Brumbies in Canberra.
Jackson, an excellent performer in the midfield in the Blues' two victories over the Cheetahs and Highlanders, has a rib injury and a knee problem.
His place is likely to go to George Moala, with Tevita Li the main candidate for the left wing.
Blues coach Sir John Kirwan said this morning that captain and flanker Luke Braid will likely start from the reserves bench as he is also carrying a few niggles following a heavy workload.