The Blues have been looking for more strength in the midfield since Francis Saili's foot injury and Nonu could be just the man to provide it. Kaino, too, will have an important role to play in adding steel to the forward pack.
Asked what he wanted to see from Kaino, one of the best loose forwards at the last World Cup, Kirwan said: "I hope he brings Jerome Kaino, that's all I've asked him to do. A hard edge, real good physicality and hard ball carrying. We want to get the Jerome Kaino who left New Zealand a couple of years ago back as quickly as possible.
He's been fantastic while we've been away, he's worked really hard, so we're expecting him to deliver that from day one and I'm sure he will.''
Kirwan said of his team's efforts over the past few weeks: "We need to make sure that we are excited off the football and running. I think if we are missing one thing it's a little effort so we're looking for more effort this week and making sure we're playing for each other.''
Hooker Mealamu is unavailable due to his calf injury, with lock Patrick Tuipulotu out with a knee injury. Wing Tevita Li's problem hand is not broken, Kirwan said.