The Newcastle United boss has been talking ahead of their vital fixture on Sunday.
The Magpies have had a terrible start to the news season and currently find themselves bottom of the table and without a win in their first eight league matches.
That could change against Norwich, but Newcastle will have to do without Dutch goalkeeper Tim Krul for the rest of the season after the stopper suffered an anterior cruciate ligament injury while on international duty.
McClaren confirmed it was a significant blow for his side but explained that it was time for another player to step up while also giving an injury update regarding the rest of his squad.
“Tim’s injury is a massive blow for us,” the Newcastle boss said. “We’ve had a few days to get over it and it’s time for Rob Elliot to step into his boots.
“(Daryl) Janmaat has trained the last couple of days. (Jack) Colback, (Massadio) Haidara and (Paul) Dummett have all trained and are in contention.”
That is particularly good news regarding Janmaat, whose great form has been one of the few positives for Newcastle so far this season.
The return of Dummett is also a considerable boost with the Magpies in desperate need of more defensive solidity if they want to pull clear of the bottom three.
SMc: "Tim's injury is a massive blow for us. We've had a few days to get over it and it's time for Rob Elliot to step into his boots." #NUFC— Newcastle United FC (@NUFC) October 15, 2015