It would have been the final match for Piers Francis, the first-five who made his England test debut last month and who is returning home to play for Northampton, but an ankle injury has ruled him out.
Lock Patrick Tuipulotu, dropped from the Blues team to play the Lions after arriving late for training, has also picked up an ankle injury in Japan.
Faumuina played 57 minutes for the Blues against the tourists and 78 minutes off the bench in the three tests.
The Blues, minus their All Blacks, prepared for the Sunwolves match by playing a warm-up against Japanese club Honda, with whom they recently acquired a working relationship.
The Blues were comfortable winners and a similar result is likely against the Sunwolves, who have returned from an unsuccessful trip to South Africa where they were beaten 52-15 by the Stormers in Cape Town and a week earlier 94-7 by the Lions in Johannesburg.
A victory and Umaga's men will finish in ninth place on the points table. They are almost guaranteed to finish with more competition points than the Brumbies, who automatically qualify for the playoffs (and a home quarter-final) due to their position as Australian conference leaders.