"They're obviously important players for us but that's what happens ... it's now up to others to make the most of the opportunity."
Carlos Tuimavave has been named at five-eighth in place of Maloney.
Micheal Luck's return after a successful 80-minute hit-out for the Vulcans on Saturday provides a welcome injection of experience, while Konrad Hurrell - who spent much of last week in a moon boot - also returns to shore up the centres.
"Both Lucky and the medical staff are satisfied he has come through last Saturday's match in good shape and Konrad is also good to go again," McClennan said.
With Hurrell returning to the centres, Ben Henry reverts to the second row and Elijah Taylor moves to loose forward.
Having lost Matulino, McClennan has juggled his front row options by listing Jacob Lillyman and Sione Lousi as the starting props with Russell Packer named on a five-man interchange that includes Sebastine Ikahihifo, Luck, Steve Rapira and Sam Lousi.
Regular captain Simon Mannering is still recovering from an ankle sprain and isn't expected to play.
