OldTimeHockey said:
I don't think it's an attitude or clique thing.
What I'm seeing from his game lately (not full games, just stretches, as Keefe points out) is, is a lapse in the details and habits the team wants to instill as a process and muscle memory in all players.
Primarily, it's stopping up on pucks when you are (getting) in position to battle. As accounted by many many people who focus on this part of his game, Nylander is a fly-by guy by nature. On the one hand, he is supposed to be an offense driver on the team so I surmise that in his decision making, he is trying to preserve some juice per shift to make plays in offense (i.e. hope the puck gets freed up behind him) so he opts to keep his momentum to sweep around. There is a stamina cost to the added bulk from the past couple of seasons. I'm sure he's a bit frustrated since for whatever reason, Tavares and rando-winger plays are always one or two passes away from clicking but always seems to breakdown before it gets useful. So when he's draining himself making the right plays in the DZ or on the half walls but gets nothing in the net to show for it, he starts to drift back to the habit of poaching pucks, which was effective when playing in a stretch pass system with Hyman and Matthews, but not what the current system needs.