"He's the class horse and we've taken weight off his back with the claim for Jabez (Johnstone).
"We want to give him a look at racing and get right into the system here, but then how far do we go now, I'm not sure, as you have to be thinking spring as that is ultimately his goal.
"Potentially, if he was to win on Saturday, that could see him turned out for spring."
The claim of Jabez Johnstone, who has ridden three city winners this week, will bring Zahrann into Saturday's race with 57kg.
Shockletz will also benefit from the 1.5kg claim of her rider Logan Bates, getting into Saturday's race with 51.5kg.
Turnbull said Shockletz will appreciate the rise to 2000m on Saturday after two runs from a spell and a last start fourth over 1800m at Sandown.
"Her run last time had plenty of merit," Turnbull said.