The Blues Super Rugby side are seeking permission to call in midfield reinforcements, after the All Black Francis Saili and Jackson Willison were ruled out for up to six weeks.
Blues coach Sir John Kirwan says a young player should be allowed to join the squad, and they're awaiting permission.
Saili's out for four to six weeks with an ankle sprain, while Jackson Willison strained a hamstring during Friday's win over the Queensland Reds, and is expected to be out for a similar period.
Albert Nikoro is also consulting a surgeon this week after struggling with a knee injury.
Sir John says George Moala and Pita Ahki are the main options being considered to play centre against the Chiefs on Friday in New Plymouth, while Charles Piutau could also move in from fullback.
Meanwhile the Hurricanes are seeking clarification from SANZAR referees boss Lyndon Bray over some of referee Steve Walsh's interpretations in their narrow loss to the New South Wales Waratahs on Saturday.