The Salop were defeated 2-1 by Wallsall on Saturday, leaving them two points adrift in the bottom four.
Atajic, meanwhile, has started just one game for the club having joined on loan from Celtic in January.
"It's the managers decision as to who he wants to play, but I'm ready," the 20-year-old told the club's official website. "You show him what you can do through training and working hard. I would like to start, every player does.
"I need to get some starts to help my development. In my opinion, I could help the team, but it's the manager's decision. Coming off the bench, I have to produce. I can't moan when I'm coming on."
Shrewsbury are back in action next weekend with a match against Stevenage.