Queensland coach Ewen McKenzie has warned his troops that the Crusaders All Blacks and star players are essentially "only human" and that their abilities could be expected.

The Reds will likely face a Crusaders packed with All Blacks, including Richie McCaw, Dan Carter, Kieran Read and Brad Thorn.

Sonny Bill Williams was one man, Australian media pinpointed as a danger man for the Reds, but McKenzie thinks otherwise.