From what I have heard about Mago, he is here for depth.
Sims definitely won't be playing in the second row and I wouldn't re-sign him past this season.
If we were to have a utility on the bench I would drop Sims out of the 17.
If Bird isn't at centre I think the most likely scenario, at least from the start of the season is Kahu to stay on the wing and Opacic getting his chance to show what he has got.
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