On the back of some compelling form in the finals, Manu has surged into contention for a maiden Test jersey when the Kiwis face Australia next month.
The 22-year-old is one of potentially eight Kiwis hopefuls who Maguire will assess when the Roosters play the Melbourne Storm on Sunday.
Tokoroa-raised Manu has been the in-form New Zealander in the finals, having started all but one game this season.
Maguire will early next week name his squad with the NRL decider forming a key part of his thinking.