<blockquote class="twitter-tweet" lang="en"><p lang="en" dir="ltr">Kadri hit on Evander Kane. I'll save you the trouble: player safety will look at it, no need to angrily tweet @ them <a href="https://t.co/M3Y9JvIeg1">pic.twitter.com/M3Y9JvIeg1</a></p>— Stephanie (@myregularface) <a href="https://twitter.com/myregularface/status/656986620227284992">October 22, 2015</a></blockquote>
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That does not look good.
So, here's the scene: Evander Kane is trying to get a handle on the puck in the neutral zone. Nazem Kadri doesn't want that, though; he wants the puck. So he goes to hit Kane, just as Kane is going to move it out of his reach and collect it later.
Kane's body position changes, head going up. Kadri comes in, and just unnecessarily moves his shoulder - right into Kane's head.
There was no penalty on the play, and since Kane is still in the game, he appears to be fine. But regardless of intent, that's a headshot, and Kadri can't do that, innocuous neutral zone play or not.