I wouldn't be shocked if he can in a little closer to $2mil, especially with the rising cap. He'll be a really interesting arbitration case. Over the past 2 seasons he has 26 5-on-5 goals. Players tied with him there include Robert Thomas, Tim Stutzle, Quinton Byfield, Juraj Slafkovsky, Pavel Buchnevich, and Dylan Larkin. And they all played between 25-35 more games than Robertson. Obviously, not even remotely anywhere close to the caliber of players there but hard to argue that he doesn't do one thing really well and that thing is pretty important.
With that said Michael Carcone is also in this same group of 26 goal 5-on-5 scorers in the last 2 seasons and after hitting unrestricted free agency this summer he had to resort to going back to Utah on a league minimum deal 2 weeks after free agency opened. He was coming off a down season though, with 21 total goals in 23/24 but just 7 in 24/25. Adam Gaudette kind of goes the other way with only 1 big season (19 goals this season) and that earned him a 2 year, $2mil AAV deal as a UFA.