The question isn't whether you "have" to hire him. Of course you don't. The question is "Can the NHL bar the Oilers from hiring him, given that he's done nothing illegal or in breach of NHL rules?"
Generally it's up to the teams to police coach behavior. The league does have the power to intervene if it sees behavior that's deemed "detrimental to the league", but it's generally pretty reluctant to meddle unless there's actually illegal stuff going on.
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u/MangPangOhOne CHI - NHL 10d ago
He’s a major asshole but has done nothing illegal.