Mike Tomlin's squad has flipped the rookie back under center for the past two practices, per Ed Bouchette of the Pittsburgh Post-Gazette.
"We're just turning over the stones," Tomlin explained.
Whether the 6-foot-4 Gardner remains with the quarterbacks, moves back to receiver or bounces back and forth remains to be seen. He's currently got a tenuous spot on the Steelers' roster.
Given Pittsburgh's depth at the wideout position -- and questions about whether he can run the NFL route tree -- Gardner might have a better chance to make the roster as a backup quarterback.
Gardner lacked accuracy and struggled with his decision making during the past two years at Michigan. He's a long shot to make the roster unless the Steelers are convinced he can become a project with upside to potentially fill multiple roles.