"Dallas is going to be a big part of what we're doing going forward," Harbaugh told reporters. "It just depends on the game plan and how the offensive coaches decide to put that together.
"He wasn't active this last game, but Dallas has done a lot of great things for us. I think he's exactly in that conversation to bolster us up.
"I think he gives us more of a threat to the inside stuff that we're doing and hopefully makes everybody a little bit better."
Clark has 31 receptions for 343 yards and also three touchdowns.