There's the obvious reason: he's not a goalie. But it goes even deeper than that.
As the son of an NHLer, William Nylander is well-travelled. His childhood is filled with a lot of adorable and interesting stories, too; how else do you get Brooks Laich to be your uncle in such a short timespan?
Michael Nylander's reach stretches out past Laich, though. Of course it touches on Jaromir Jagr. From 2005-07, the elder Nylander played two seasons with the New York Rangers, alongside Jagr. William would have been nine, 10 years old at this time, and growing up around NHL locker rooms, well on his way to getting better at the game.
Except, apparently, when it came to being in net.
Nylander's dad was linemates with Jagr in NY; one day William slapped on the pads, went on the ice & had Jaromir come in on a few breakaways
— Mark Masters (@markhmasters) March 17, 2016
Nylander with huge smile when recalling that Jagr story; "He wasn’t going too hard on me, but he was able to score on me"
— Mark Masters (@markhmasters) March 17, 2016
If Nylander couldn't stop Jagr when he was 10 years old and Jagr was supposed to let him, what are the chances he can do it at 19? They are very low. Let Jonathan Bernier handle things.
Side note: how weird does it have to feel to be facing off against a guy who not just played alongside your now-retired dad, but is older than your now-retired dad? Jagr is ageless.