"What's good about him is he has been here before, comfort level, players are excited to have him back because he is good in the locker room, a good person," Montgomery said. "He gives us three lefties, three righties to have an option every night on the backend. His size, his length, his ability to kill plays, a lot of exciting things. He just makes us better."
Oleksiak skated on the third defense pair with Taylor Fedun in Tuesday's practice in Frisco, and that's where he is expected to play Wednesday when the Stars host the Buffalo Sabres.
"Just to give us three lefties and three righties, he is probably going to slot in with Taylor Fedun for tomorrow," Montgomery said. "That will also allow him to play not huge minutes but minutes where he gets to learn how we play."
And Montgomery said that he expects Oleksiak to be a regular player for now along with John Klingberg, Esa Lindell, Miro Heiskanen, and Roman Polak. The battle will be for the sixth spot on the blue line between Fedun, Julius Honka, and Connor Carrick. Currently, the edge for the sixth spot goes to Fedun.
"Play the six that are the best," Montgomery said. "Right now, Oleksiak is going to be in every night. We know Esa, Miro, and Klinger aren't going anywhere. And Roman isn't going anywhere. It's a battle for that sixth spot, and right now we think Taylor Fedun has been the most consistent player and we know what we are getting out of him, so he is going to get that opportunity to start with it."
As for Oleksiak, he's just excited to be back and ready to get going after a surprising twist Monday that brought him back to Dallas.
"Kind of a crazy day yesterday and through a whirlwind," Oleksiak said. "But it's good to be back in Dallas and see some familiar faces, see everyone again and catch up. I am going to try to hit the ground running here."