I think he has certain tools that would make him a Top-6 here. He'd at worst be a Top-9. He would get PP time because with a shot like his, you can't not put him on the PP. In LA, he's on their 4th line, but he is on their PP.
He's got an elite shot and he's got size (6'2" and 209 lbs).
I look at him kind of like I do Newhook. In the sense that he is putting up a decent amount of goals and points for a player stuck down the line-up and not averaging a lot of minutes. But once he comes into a situation where he can play higher in the line-up and be more free, he will thrive.
Before Newhook got hurt, he was on pace for a 25-goal and 46-point season. Before that in Colorado, he was a 13-14 goal and 30 point player averaging between 13-14 minutes of TOI. Kaliyev has been a 13-14 goal and around a 30-point player averaging between 11-13 minutes of TOI.